Select the correct answer from each drop-down menu. a species was added into a particular ecosystem to control the population of a prey species. this method of introducing a new species is called . the population of the added species increased, leading to an imbalance in the ecosystem. this increase happened because .
If a species was added into a particular ecosystem to control the population of a prey species, then this method is called biological augmentation.
What is biological augmentation?Biological augmentation is a process where a newly introduced species increase the number of individuals of another species.
In this case, the population of the added species increased, leading to the competition for resources increased in the ecosystem.In conclusion, If a species was added into a particular ecosystem to control the population of a prey species, then this method of introducing a new species is called biological augmentation.
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five kingdom system of classification is more advanced than two kingdom system of classification. why
please can you answer my question
its for ninth grade please tell suitable answer and fasttttttt
Answer:
This system of classification of living organisms is better than following the older classification of plants and animals because it eradicated the confusion of putting one species in two different kingdoms.
Explanation:
In five kingdom classification, the criteria to classifiy organisms include
1. Presence / absence of cell wall
2. Presence / absence of nuclear envelope
3. Mode of nutrition
4. Mode of reproduction.
5. Body organisation, Unicellular or multicellular
Acoordingly the organisms were grouped in 5 Kingdoms namely,
Monera - Unicellular prokaryotic organisms -Example, Bacteria
Protista - Unicellular eukaryotic organisms - Example, Euglena, Amoeba, Paramoecium etc
Fungi - Eukaryotic, multicellular organisms with saprophytic mode of nutrition.
Example, Rhizopus, Agaricus etc
Plantae - Eukaryotic multicellular organisms, that are photosynthetic autotrophs Example, Mango, Coconut etc
Animalia - Eukaryotic multicellular organisms, heterotrophic in nutrition
Example, Lion, Dog, Monkey etc
Advantages of Five kingdom over two kingdom classification
1. The five kingdom classification seggregates organisms based on five basic criteria, as compared to two kingdom classification where organisms are classified based on two criteria.
2. Unicellular prokaryotes and eukaryotes as well as Fungi were not included in the two kingdom classification.
3. Mixotrophs like Euglena too were not included in the two kingdom classification.
State two functions of vascular bundles in leaves
Answer:
Vascular bundle consists of two complex tissues- xylem and phloem. So it has the functions of both.
Functions of vascular bundle:
Transportation of water and minerals from roots to other plant parts and leaves.
Transportation of food from leaves to all other plant parts.
Sometimes, it also serves for support.
Explanation:
Hope it help you
The function of vascular bundles in leaves is transportation of water and minerals from roots to other plant parts and leaves.
What do you mean by vascular bundles?A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem.
Vascular bundles play important roles in transporting nutrients, growth signals, amino acids, and proteins between aerial and underground tissues.
It is a component of the transport system in vascular plants. It comprises two tissues, i.e. phloem and xylem. Xylem comprises vessel elements, tracheids, xylem sclerenchyma, xylem parenchyma, and xylem fibers.
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In the cells of most organisms, DNA is contained in the
a
cell wall
b
nucleus
c
ribosomes
d
lysosomes
Answer:
B. Nucleus
Explanation:
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.
The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people
Which is the answer a b c or d.
why we find the soft parts still
remaining in a Fossil, if it trapped
in amber, or ice?
Answer:
Why dont soft parts usually leave fossils?
The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts. Hard parts also decay more slowly than soft parts, giving more time for them to be buried.
Explanation:
yeah
Drag each item to the correct location to indicate whether it describes the American or European weather model.
USA model predicts weather out to 10 days, 21 forecasts, four models, whereas European model is most accurate, with 51 forecasts and weather out to 16 days.
What are weather models?The weather models are defined as different models used to predict the weather around the world.
The Global Forecast System (GFS) model is developed by U.S. National Weather Service and consists of four separate models (atmosphere, ocean, land/soil, sea ice).
In conclusion, USA model predicts weather out to 10 days, 21 forecasts, four models, whereas European model is most accurate, with 51 forecasts and weather out to 16 days.
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3. What device is used to measure the radiation exposure of people working with radiation?
Answer:
Geiger counters are commonly used to measure the amount of radioactivity, but there are other types of detectors that may be used
Explanation:
Suggest how damage to the air sacs can cause the symptom of breathless when exercising.
how does climate change relate to fairness and development?
Answer:
Climate change aggravates the effects of population growth, poverty, and rapid urbanisation. Without serious adaptation, climate change is likely to push millions further into poverty and limit the opportunities for sustainable development and for people to escape from poverty.
Fairness in Adaptation to Climate Change looks at the challenges of ensuring that policy responses to climate change do not place undue and unfair burdens on already vulnerable populations.
A dietitian wants to track the effect of varying amounts of protein on the muscle mass of her clients. The varying amounts of protein are a(n) _____, and the resultant muscle mass is a(n) _____.
what is the probability that a gamete will be recessive in a heterozygous parent
A heter0zygous parent (Aa) has one dominant allele (A) and one recessive allele (a). They will produce 4 gametes and half of their alleles are recessive so there is 50% that a given gamete will be recessive (2 gametes have recessive, 2 gametes have dominant)
What is an allele?Assuming the gene is represented by the allele G (dominant), the alternate form (recessive) of the allele will be g.
A heter0zygous pea plant will have the genotype Gg. During gamete formation, Gg will split into G and g gametes.
Thus, 2 is the probability that a gamete will be recessive in a heterozygous parent.
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6. If an exothermic reaction has reached equilibrium, then increasing the temperature will
A. favor the forward reaction.
B. favor the reverse reaction.
C. favor both the forward and reverse reactions.
D. have no effect on the equilibrium.
If an exothermic reaction has reached equilibrium, then increasing the temperature will favor the reverse reaction. So, the correct option is B.
What do you mean by Exothermic reaction?Exothermic reactions are those reactions in which the energy or heat is liberated apart from the product.
Increasing the temperature of exothermic reactions causes a decline in the concentration of products while enhancing the concentration of reactants.
Therefore, if an exothermic reaction has reached equilibrium, then increasing the temperature will favor the reverse reaction.
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Which phrase should be written in the column titled "always"? have a backbone are warm-blooded are multicellular eat plants
The correct phrase would be that warm-blooded animals always have a backbone.
What warm-blooded animals?They are animals whose body temperature does not fluctuate with the temperature of the environment.
Warm-blooded animals have a system in place that ensures that the temperature of their body does not fluctuate significantly. The process by which this is achieved is called homeostasis.
Warm-blooded animals are advanced animals in the chordate group. Chordates have notochords that develop into the brain and the spinal cord in several animals.
Thus, all warm-blooded animals always have a backbone.
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Answer:
Are multicellular
Explanation:
Correct on Edge
what did Mendel's cross pollination of pea plants prove (50 points pls anwser)
a Different offspring do the same parents inherit different characteristics
b pea plants can have yellow seeds or green seeds
c genes are found on chromosomes in all cells of an organism
d cross-pollination creates plants with new characteristics
Answer:
a
Explanation:
Different offspring of the same parents inherit different characteristics.
Answer: A. Different offspring do the same parents inherit different characteristics
What is the genotype of the male in generation i?
Answer:
Heterozygous is the answer
What type of doctor specializes in the male reproductive system?.
Answer:
urologist
Explanation:
A urologist is a medical doctor specializing in conditions that affect the urinary tract in men, women and children, and diseases that affect the reproductive system
how does diffusion helps in absorption of mineral
Higher minerals outside of the cell will diffuse into the cell, down the concentration gradient.
Hope this helps!
can you answer this question pls
Answer:
Tumor's are formed by a rapid cell division and is given many immature cells. But by preventing mitosis it will prevent the formation of growth of new cellls and will hence the growth of a tumor.
Hope this helps :))
A marine ecosystem is represented below. top carnivores, sharks, dolphins, albatross, third-level carnivores, squid, second-level carnivores, larger fish, decomposers first-level carnivorous consumers, juvenile stages of fish, jellyfish, crustaceans, and sea stars, herbivore consumers, zooplankton and cockles, primary producers, phytoplankton and seaweed, sunlight. What is lost to the environment at each of the trophic levels of this ecosystem
The question is as follows,
A marine ecosystem is represented below (you will find the image in the attached files).
- Decomposers
6) Top carnivore: sharks, dolphins, albatross
5) Third-level carnivores: squid
4) Second-level carnivores: larger fish
3) First-level carnivores: juvenile stages of fish, jellyfish, crustaceans, and sea stars
2) Herbivore: zooplankton and cockles
1) Primary producers: phytoplankton and seaweed
- Sun provides energy to producers
What is lost to the environment at each of the trophic levels of this ecosystem?
In a trophic web, 10% of a link's energy is transferred to the following link, and the other 90% dissipates to the environment as heat. The answer is heat.
What is the trophic web?The trophic web is the interaction between different organisms involving transference of energy when some of them feed on the other ones.
The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
The first link corresponds to a producer organism -autotroph-.The following links are the consumers -heter0trophs-: herbivores and carnivores.The last links are the decomposers that degrade organic matter from dead organisms.Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.
Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
What is the 10% rule?From the energy that reaches the Earth's surface, only 0.1 or 1% is absorbed by autotroph organisms.
This small percentage of energy flows through all organisms in the ecosystem -from autotrophs to heter0trophs- until it dissipates in the environment.
Only 10% of energy is transferred from one level to the next one. The remaining 90% is dissipated as heat to the environment. This assessment is called The 10% rule.
This rule states that only about 10% of the energy stored as biomass at one trophic level, ends up as biomass at the next trophic level.
The progressive reduction of energy determines the number of trophic levels (4 or 5).
Heat is lost to the environment at each of the trophic levels of this ecosystem.
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Propose an action plan you would implement in your backyard or in your
neighborhood community to reduce a human impact on a local aquatic ecosystem. In
your action plan proposal, be sure to address the
questions below. Provide sufficient evidence from previous lessons and scientific
reasoning to answer the questions and support your proposed action plan.
1. Where and how it would be implemented? (2 pts.)
2 Why is it a good course of action in reducing a human impact on aquatic ecosystems from
your backyard or community? (2 pts.)
3. What is one way you would monitor your action plan to ensure that it is working to
reduce human impacts into the future? (2 pts.)
There are many ways by which we can reduce human impact in the local aquatic ecosystem.
What do you mean by aquatic ecosystem?Aquatic ecosystems include oceans, lakes, rivers, streams, estuaries, and wetlands. Within these aquatic ecosystems are living things that depend on the water for survival, such as fish, plants, and microorganisms.
It will be implemented on both backyard and aquatic ecosystem. It is good course of action so that organism of aquatic ecosystem have not suffered from the human activity like cleaniness of water, no mixing of chemicals and fishing.Constant checking of quality and population of aquatic organism will ensure that human impact get reduce on aquatic ecosystem.
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In an area of 3 square miles there are 27 bears. What is their population density?
A. 9 bears / square mile C. 24 bears / square mile
B. 81 bears / square mile D. 30 bears / square mile
Answer:
9 bears per square mile
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Oscar finds an organism that turns inorganic carbon into organic carbon. What is this process AND what type of organism did Oscar find?
Answer:
This process is called biological carbon fixation, or carbon assimilation. Oscar has found either a plant or algae.
Explanation:
Which of the following phases ends just before cell division?
A. M phase
B. G1 phase
C. G2 phase
Answer:
C
Explanation:
The G2 phase ends just before cell division as it is considered as the last phase of the process of cell division. Thus, option C is correct.
What happens in different phase of cell cycle?In eukaryotic cells, the phases of the cell cycle are divided into two major phases, which are interphase and mitotic stage. During the mitotic stage, cell divides its DNA and cytoplasm into two equal parts, thereby forming two daughter cells.
Cell division is essential for organism growth, tissue repair, healing and regeneration, and reproduction. The process by which a parent cell divides into daughter cells is known as cell division. For both single-cell and multicellular organisms, cell division is essential. Cell division can directly increase the population of single-celled organisms like Amoeba or Paramecium.
Therefore, The G2 phase ends just before cell division as it is considered as the last phase of the process of cell division. Thus, option C is correct.
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Please help would be very much appreciated
Counterclockwise rotation of the flagellum causes a bacterial cell to swim or ______ towards a stimulus, interrupted by clockwise rotation in which the cell ______ and changes its course.
Counterclockwise rotation of the flagellum causes a bacterial cell to swim or run towards a stimulus, interrupted by clockwise rotation in which the cell tumbles and changes its course.
How does a bacterium respond to stimuli?A bacterium is a unicellular organism that posseses a structure called flagellum.
Flagellum in bacteria is a long, whiplike proteinaceous appendage, used for locomotion.
However, a counterclockwise rotation of the flagellum causes a bacterial cell to swim or run towards stimulus. This rotation is interrupted by a clockwise rotation of the flagellum that causes the bacterium to tumble.
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8. food gives the body energy, which helps the body maintain homeostasis. in the
morning, an athlete eats a nutritious breakfast to get energy to exercise. what are the
main organ systems involved in the process of food from the athlete's breakfast being
broken down into nutrients and then delivered to the cells?
a. digestive and excretory systems.
b. digestive and circulatory systems.
c. nervous and excretory systems.
d. respiratory and circulatory systems.
a. digestive and excretory systems.
Reduced vegetation on Earth results in _____.
Answer:
fragmentation of habitat, soil erosion, soil compaction, and increased input of sediment into waterways.
Explanation:
Reduced vegetation on earth will result in more carbon dioxide in the atmosphere because the plants will not absorb the rest.
The effects of plant removal on soil biota were similar to that in the dry season. For both seasons, understory removal had no significant effects on soil Physico-chemical properties (soil water content, pH, total nitrogen, and soil organic carbon) but the removal of all plants significantly decreased soil pH.
Expansive changes in tundra and boreal vegetation can have significant implications for physical and ecological processes, as well as impacts on communities. Vegetation change that alters land surface darkness influences albedo and surface energy balance.
Lichens are important to the environment because _____
A) they decompose carbon dioxide
B) they produce large amounts of oxygen
C) they recycle nutrients into the environment
D) All of the above
Answer:
D- all of the above
Explanation:
Polar bears are believed to have evolved from brown bears 600,000 years ago. Their white fur is an adaptation that allows them to better survive in their snowy environment. This is an example of which mode of natural selection? Explain why you chose this answer.
Answer:
Polar bears have thick, warm, white coats to use as a disguise to sneak up and attack and kill their prey. Overall polar bears have white coats to blend in with their suroundings
Explanation: