It is feasible to make observations that agree or disagree with a theory if it is testable. A theory is not scientific if it cannot be tested by observation.
Which organism are primary consumer in this food web?
Beavertail cactus
:-- they are primary consumer because they produce the material and store the energy at the bottom of the food chain. In other words, all animals are dependent, either directly or indirectly on the food materials stored in plants.
DUE TODAY 60 POINTS
Which is an example of genetic drift?
A. Artificial selection creates vegetables resistant to insects.
B. Allele frequencies change randomly each generation.
C. Females choose mates, resulting in large males.
D. Polygenic traits change due to directional selection.
Answer:
i think the answer is b
Explanation:
B. Allele frequencies change randomly each generation
Answer:
B
Explanation:
Genetic drift is the alteration of different genotypes in a small population which can cause individuals and organisms getting wiped out, not being able to reproduce, and disappearance. Allele frequencies change randomly each generation in a gene pool (collection of different genes present in a particular population: species in this gene pool have a choice to leave the gene pool or die out).
If the water temperatures increase in the estuary, oxygen levels would _____.
A: decrease
B: increase
C: stay the same
What are the differences between a roundworm and annelid?
Answer:
Annelids are segmented worms whereas roundworms are not segmented. Further, annelids have a true coelom while roundworms have a pseudocoelom. This means annelids have a well-developed mesoderm while roundworms lack a mesoderm.
PLEASE ANSWER 60 POINTS
Which of these is the strongest evidence that all organisms on Earth evolved from a common ancestor?
A. All organisms inherit instructions for their development in DNA.
B. Many species have body parts with homologous structures.
C. Major groups of organisms share a specific type of embryo.
D. The fossil record shows an example of every organism that ever lived.
About how much time has
gone by after the Moon circles
Earth once?
A 1 hour
B 1 day
C 1 month
D 1 year
What are some reasons organisms need nitrogen
Answer:
It is an important part of many cells and processes such as amino acids, proteins and even our DNA. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins.
Explanation:
How does natural selection contribute to the theory of evolution?
Answer: Natural selection leads to evolution because the traits of those who are able to reproduce influence future generations genetics and gradually lead to these passed on traits becoming the normal state of being, thus causing the species in question to evolve.
Explanation:
A(n) _______ is an underground area where the rocks, gravel, sand, and clay are completely filled with water.
A: aquifer
B: point-source
C: watershed
D: water table
It is necessary to have limitations in an environment because if not:
Traits from species would get crossed.
Water and shelter would be automatically created by extra species that are new.
The populations of the world would soon crowd one another out and make conditions unlivable.
The world would balance itself out without problems.
animals.
Plants would take over the space of animals
Best guess is "The populations of the world would soon crowd one another out and make conditions unlivable."
What were the results of the experiment done by Dr. Tierno?
Answer:
There were many different microorganisms on the pillows. Dr. Tierno stated that these germs were probably causing the kids to have allergy symptoms.
I hope that answers your question
Which of the following correctly describes Photosynthesis?
Answer:
Photosynthesis is a plant that uses sunlight, water, and carbon dioxide to make sugar and oxygen.
PLEAS HELP 50 POINTS
Which of these is a function of the placenta?
A. To store the embryo's wastes
B. To hold the fetus upside down for birth
C.To digest food for the fetus
D. To bring oxygen to the embryo's cells
what type of material is the cell membrane made of
Answer:
They contain a variety of biological molecules, notably lipids and proteins.
Explanation:
Describe the structure of the digestive system.
Answer:
[tex]\bold{Structure \: of \: digestive \: system}[/tex]
The digestive system is made up the GI tract or digestive tract and the liver, pancreas, and gallbladder.The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.The small intestine has three parts :The first part is called the duodenum. The jejunum is in the middle the ileum is at the end. The large intestine includes the appendix, cecum, colon, and rectum. The appendix is a finger-shaped pouch attached to the cecum. The cecum is the first part of the large intestine. The colon is next. The rectum is the end of the large intestine.Which statement describes how the image represents the concept of a common?
Nutrient pollution can cause algae to grow.
Wildlife is negatively affected by algal blooms.
Runoff from many farms can cause water pollution.
Regulations can prevent the pollution shown in the picture.
Answer:c
Explanation:
Water pollution is the introduction of pollutants either naturally or due to human activities. Runoff from many farms can result in water pollution.
What are the causes of water pollution?Water pollution is the contamination of water sources with some pollutants which make the water unusable for the purposes like drinking, cooking, cleaning, swimming, and other activities.
These substances can be chemicals, bacteria, parasites, etc. All sorts of pollution make go to the water directly or indirectly.
One of the prevalent sources of water pollution is runoff from many farms.
Thus, the correct option is C.
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3 paragraph summary (I'll give brainlist if you do it correctly)
Answer:
alright bet I got this
Explanation:
Have you ever wondered what can happen to those plastic bottles you toss away? How do they decompose? What happens to them? Its simple really, they get eaten! No, not by people of course they are eaten by a tiny critter called a wax worm. The wax worms earn their name because they are often found living in beehives where they eat the beeswax.
Wax worms much like mealworms are used to break down things that would normally be endangering to our environment. These seemingly useless little animals do a whole lot for our environment especially with the amount of waste we produce! They really are a tiny secret hero to todays pollution problem.
After quite a few studies scientists are still unsure on how was worms can breakdown plastic with their tiny bodies but they appreciate the work these little recyclers do. They have a lot of theories on how these worms do this one of the theories is that bacteria can break it down, another theory is that enzymes in the worms intestines break down plastics. Though scientists believe it will take a while to figure this out they enjoy studying and learning more about this tiny helper.
Rainbow trout live in the rivers and streams of upstate New York. Rivers in this area are cold and have strong currents. If temperatures fall over time because of climate change, what is one variation that would likely help the trout to survive? Why? Write 1-2 sentences.(2 points)
Tolerance towards cold temperature and adaptabilities are the variation that help the trout fish to survive.
Which factor help the trout to survive?If temperatures fall over time because of climate change, the tolerance towards cold temperature is the one variation that would likely help the trout to survive because only those organisms survive in cold temperature that have good tolerance and various adaptation towards cold temperature.
So we can conclude that tolerance towards cold temperature and adaptabilities are the variation that help the trout fish to survive.
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2. A car salesperson claims that a 300-hp engine is a necessary option in a compact car, in place of the conventioNl 130-hp engine. Suppose you intend to drive the car within speed limits (# 65 mi/h) on flat terrain.
How would you counter this sales pitch?
Hi there !
Why is biodiversity important ?
Thank you
Answer:
Biodiversity is necessary for all species on Earth, including humans, to function properly. We cannot have healthy ecosystems that give us with the air we breathe and the food we consume without a vast range of animals, plants, and microorganisms.
Explanation:
Answer:
Biodiversity is essential for the processes that support all life on Earth, including humans.
Explanation:
is water capable of chemical weathering
?
Answer:
no no no no no no no no no no no no
Which statements describe situations where organisms interact and depend on each other for survival?
Choose all correct answers.
1. Tree frogs use plants as protection from predators. The plants receive nothing from the tree frogs.
2. Zebras eat grass, Zebras spread the grass seeds to new locations in their droppings as they move with their herd.
3. Birds find shelter in trees as they build their nests and raise their young. Birds also eat the fruit on trees and then spread the seeds to new places in their droppings.
4. The oxpecker feeds on the insects that surround the rhinoceros, The rhinoceros has fewer bugs surrounding it.
Answer:
Predation is an interaction in which one organism, the predator, eats all or part of the body of another organism, the prey.
Herbivory is a form of predation in which the prey organism is a plant.
Predator and prey populations affect each other's dynamics. The sizes of predator and prey populations often go up and down in linked cycles.
Predators and prey often have adaptations—beneficial features arising by natural selection—that are related to their interaction. For prey, these include various defenses and warning signals, such as bright coloration.
Explanation:
Why wind is the best energy for our future.
Because it is environmently friendly and doesn't cause air pollution.
The plants in this ecosystem are dark in color to absorb sunlight, covered in hair and grow in clumps. What type of ecosystem could a plant with these
adaptations be best fit for?
Darker colors absorb and retain warmth than warm tones. As a result, plants in the tundra have dark-colored leaves, hairy and clumped and stems to help them absorb solar heat faster and stay warm for longer periods of time. So it could be tundra ecosystem according to the given scenario.
What is tundra ecosystem?Tundra ecosystems are treeless areas found in the Arctic and on mountain peaks where the climate is cold and windy and rainfall is scarce.
Much of the year, tundra lands are covered in snow, but summer brings bursts of wildflowers.
Darker colors absorb and retain warmth than warm tones. As a result, plants in the tundra have dark-colored leaves, hairy and clumped and stems to help them absorb solar heat faster and stay warm for longer periods of time.
Thus, the correct ecosystem for the given condition is tundra.
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Marcie feeds her dog 98 ounces of dog food each week. She has 6 pounds of dog food.
Does she have enough dog food to feed the dog for a week? How many ounces of dog food does she have?
Answer:
She does not have enough for a week. Marcie has 96 ounces.
Explanation:
6 pounds is 96 ounces. Since she needs 98 ounces, she does not have enough for a week.
What abiotic factors affect the
oceans?
Life ORientation project 2021 task 2
A life orientation refers to a subject studied in Grade 7-9 of South-African Schools. The purpose is to give students in school orientation on how they ought to behave in life and society.
What are the topics in Life Orientation?Some of the topics you'd typically find in Life Orientation are:
Goal settingHealth, social and environmental responsibilityconstitutional rights and duties etc.Learn more about the life orientation project at:
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Metals in streams and rivers cause a pH that is so low that they ____.
A: Cause plants to grow well
B: Easily support many types of aquatic life
C: Cannot support sensitive populations of aquatic organisms
D: Encourage nutrient uptake by living organisms
Answer: C
when the pH level is very low in streams and rivers, they are inhospitable for many organisms
1. Which structure is found in all animal cells?
Explanation:
The cell containing eukaryotic cell enclosed by plasma membrane and containing a membrane bounded both nucleus and organelles
Help me plsssssssssssssssss
Answer:
Planet A is Venus
Planet B is Saturn
Explanation:
Planet A 0.72 AU which Mars and Uranus arent. Also Planet A doesnt have rings eliminating Saturn. This means that the answer for Planet A is Venus
(BTW, Planet B is Saturn, in case it asks you in a later question)
Hopefully this helped you!
the answer should be venus