Answer:
Explanation:
There are many things it would teach us. First, it would teach us that we are not alone in the universe. Secondly, it will teach us that there is life that can survive in extremely harsh environments. This will also allow us to examine and understand the biological mechanisms that allow these microbes to survive in these environments. This alone can open up hundreds of doors in science, allowing us to develop new technology, theories, fields etc. There is so much that we can learn about life in general from a single living alien microbe.
Entre as características evolutivas que diferenciam as gimnospermas das pteridófitas, estão a:
a) Presença de sementes.
b) Presença de vasos condutores.
c) Presença de flores e frutos.
d) Presença de caule.
e) Presença de caule, folhas e raízes.
Answer:
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Explanation:
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Fur seals and sea lions have similar anatomy. They probably have a common ancestor.
Match the structure with the correct type. A structure type may be used more than once. 35.bat wing and mouse arm_____A. homologous structure 36.reptile foot and bird foot ____B. analogous structure 37.dolphin fin and fish tail ____C. vestigial structure 38.eves on a blind cave fish ____ 39.snake tongue and dog nose ____
Answer:
35. A. homologous structure
36. B. analogous structure
37. B. analogous structure
38. C. vestigial structure
39. B. analogous structure
Explanation:
A homologous structure is a similar structure/trait found in different species because they diverged (evolved) from a common ancestor, i.e., these species share a common ancestor that had the homologous structure/trait. A homologous structure may have the same or different functions in the descendants. Conversely, an analogous structure is a similar structure/trait that evolved independently (i.e., by convergent evolution) in different species to have the same function, thereby these species don't share a common ancestor with the trait. Finally, a vestigial structure is a rudimentary biological structure found in an organism that has lost its original/ancestral function (e.g., the appendix in humans or the hindlimbs of the snake). Vestigial structures provide strong evidence for evolution by use/disuse of body parts.
Homologous and Analogous structures differentiate in origin and function. Vestigial structures have lost their function. A) Homologous, B) analogous, C) analogous, D) vestigial, E) analogous.
What is an homologous structure?Homologous characters are the structures of different organisms that,
are composed of the same basic elements. share the same position in the body and the same relationship with adjacent structures.share the same embryological development.These structures might express some variations between the organisms that might be related to their function and to the environment. Their function is not necessarily the same in all the organisms involved.
These homologous characters are present in organisms related that share a common ancestor.
What is an analogous structure?Analogous structures are those body parts of different organisms that accomplish the same function, but they are originated from different areas. These structures do not share the same origin.
What is a vestigial structure?Vestigial structures are those body parts, genetically determined, that have been retained during the evolution of the taxonomic group but have lost or reduced their original function.
Such vestigial structures were plenty functional in the ancestors of new species, but now are typically degenerate, stunted, or rudimentary, and tend to be much more variable than homologous non-vestigial parts.
According to these definitions, we can answer the questions.
bat wing and mouse arm_homologous structure_reptile foot and bird foot _analogous structure dolphin fin and fish tail _analogous structure_eyes on a blind cave fish are _vestigial structure_ snake tongue and dog nose _analogous structure_You will learn more about homologous, analogous and vestigial structures at
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2. What is the difference between a wave and a
particle?
a. A particle is a discrete unit of energy, a wave is a
continuous flow of energy
b. A wave carries energy: a particle carries light
C. A wave moves at the speed of light; a particle can
move at a range of speeds
d. A wave carries electricity, a particle carries a
magnetic charge
Answer:
d A wave Carrie's electricity ,a particle carries a magnetic chaege
Answer:
A. A particle is a discrete unit of energy, a wave is a
continuous flow of energy
Explanation:
1. Shifting from mechanical picking to hand picking results in which of the following improvements?
a. reduced labor cost
b. increased packing efficiency
c. reduced senescence
d. increased speed
Answer:
The answer is A
Explanation:
What can happen when a community becomes isolated from the rest of its species for many generations?
a) Competition between individuals will decrease.
b)The community will grow more slowly.
c)A new species can form.
d)There would be no effect on the community.
Answer:
C) A new species can form.
Explanation:
This is the concept of genetic drift, where a species being isolated gets an unnatural change in the gene pool, and thus can evolve differently.
I need help once again!!
Answer:
I believe the answer is A. An organ system supports all parts of the organism.
Explanation:
This answer makes the most sense to me.
Write two functions of kidney.
Answer:
remove waste products from the body. remove drugs from the body. balance the body's fluids. release hormones that regulate blood pressure.
What is the purpose of mitosis?
Answer:
Mitosis creates more diploid cells by copying each chromosome and moves it to the other side of the cell.
Explanation:
This lets the cell get divided straight down the middle.
Which 'if any' of the following are true? Aquatic animals present a greater risk to divers than any other factor. Most aquatic animal bites result from an animal's defensive response to a perceived threat or, on rare occasions, from a case of mistaken identify. Because they are perceived as more aggressive, men are more likely to be the victim of an aquatic animal attack than women are. None of the above.
Answer:
B. Most aquatic animal bites result from an animal's defensive response to a perceived threat or, on rare occasions, from a case of mistaken identify.
Explanation:
can people see solar winds?
Answer:
Yes
Explanation:
astrophysicists can now see the solar wind with their own eyes.
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Bacteria and other micro organisms grow and produce acids. Ravi’s mouth was
checked before and 1 hour after eating, at 15 minutes intervals. It was seen that
the environment inside the mouth was becoming more and more acidic, after
every 15 minutes.
a. Explain the reason for this.
b. Suggest the possible effects of this on the teeth.
c. How can you prevent this?
Answer:
hey
Explanation:
i think its because f the bacteria forming inside the moith due to food
the teeth can detiriorate and break down
by brushing daily
Answer:
check cbse textbook gr.7 pg19
care of teeth
Explanation:
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Is there a way to know any test exam style questions for 9th grade biology because biology is a very complex subject and lots of information to learn and I want to study the key details thanks:D
The features of alveoli for the efficient exchange of gases.
A. Thin wall, moist layer and less blood vessels
B Thin wall, moist layer and more blood vessels
C. Thick wall, moist layer and more blood vessels
Explanation:
The alveoli are lined with mucus and are surrounded by a network of blood capillaries. They have very thin walls for gases to be absorbed through. An individual air sac is called an alveolus. The layer of moisture in the alveoli allows gases to dissolve so that they can diffuse quickly.
Put the following events in the correct order:
A. mRNA leaves the nucleus and goes into the cytoplasm
B. The DNA sequence is copied to the mRNA sequence during transcription
C. Proteins determine our traits
D. Ribosomes read the mRNA and create a chain of amino acids
Answer:
the correct order is B,A,D,C
PLEASE HELP ME!!
Mental illness is:
A. seen usually only in large metropolitan areas
B. common
C. very rare
D. found only 1 out of 100 adults
AP_EX - *PSYCHOLOGY*
Answer:
B
Explanation: Unfortunately it's common for people .
As part of the greenhouse effect, Earth’s surface radiates heat back into the atmosphere and the atmosphere absorbs this heat. Why do areas near the equator generally radiate more energy back into the atmosphere than areas near the poles?
Areas near the equator have more clouds in the atmosphere than areas near the poles.
Areas near the equator receive more incoming solar energy than areas near the poles.
The greenhouse effect only occurs near the equator.
The greenhouse effect only occurs near the poles.
Answer:
The correct answer is B. Areas near the equator receive more incoming solar energy than areas near the poles.
Explanation:
The equator is located in the center of the planet from North to South, this location cause this zone and nearby zones to receiver more solar energy than areas near the poles. This occurs because the natural tilt of Earth makes sun rays directly hit the equator all the time of the year, while areas in the poles are not hit directly and the exposition to sunlight varies with the seasons of the years. This explains why in the equator the temperatures are higher than in the poles. Besides this, the difference in radiation received makes areas in the equator radiate more energy back due to global warming gases, and the global warming phenomenon.
Areas near the equator receive more incoming solar energy than areas near the poles.
What is greenhouse effect?Greenhouse effect, a warming of Earth’s surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapour, carbon dioxide, methane, and certain other gases in the air.
The equator is located in the center of the planet from North to South, this location cause this zone and nearby zones to receiver more solar energy than areas near the poles.
This occurs because the natural tilt of Earth makes sun rays directly hit the equator all the time of the year, while areas in the poles are not hit directly and the exposition to sunlight varies with the seasons of the years.
This explains why in the equator the temperatures are higher than in the poles. Besides this, the difference in radiation received makes areas in the equator radiate more energy back due to global warming gases, and the global warming phenomenon.
Learn more about greenhouse effect here:
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¿Cómo puede el río cambiar el lugar de la topografía?
Answer:
Los mapas topográficos utilizan el sistema de representación de planos acotados, mostrando la elevación del terreno utilizando líneas que conectan los puntos con la misma cota respecto de un plano de referencia, denominadas curvas de nivel, en cuyo caso se dice que el mapa es hipsográfico.
Explanation:Además de los campos mencionados anteriormente, la topografía es fácilmente aplicable a cualquier trabajo o proyecto donde se necesite realizar planos, obtener datos de un terreno y ubicar puntos en la superficie terrestre con gran precisión y rigurosidad técnica.Es posible determinar la posición de un punto sobre un plano horizontal: a partir de un solo punto conocido, por levantamiento de poligonales , un método que consiste en medir distancias horizontales y azimut a lo largo de una línea quebrada (ver Sección 71);
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make a list of social norms being practiced in your family and community
Answer:
conservation of public properties
respecting senior
love junior
helping person of societies in need.
participating in the religious functions of neighbors.
A frame which is used for ecological sampling
Answer:
A quadrat is a frame (usually a square or a circle) of known area used to isolate a subset of the population. This subset will comprise one sample. Quadrats come in various sizes (and shapes) with the size selected determined by features of the organisms in the population to be sampled.
Explanation:
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Answer:
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A researcher stimulates, with a small electrical charge, a portion of a cat's limbic system. The cat suddenly jumps and acts as if it is fighting. What portion of the limbic system was stimulated
Answer: amygdala
Explanation:
The limbic system, refers to the set of brain structures that's located on the sides of the thalamus. The function of the limbic system include olfaction, behavior, emotion, and long-term memory.
Since the cat suddenly jumps and acts as if it is fighting, the portion of the limbic system that was stimulated is the amygdala.
A light meal will digest in about how many hours?
1-2 hours
3-5 hours
6-8 hours
10-12 hours
how is human population dealing with air pollution?
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Which of the following lists contains organisms with different kinds of cells?
A earthworm, clam, insect, jellyfish
B. redwood tree, daisy, rose, bacteria
C. turtle, chicken, dolphin, salamander
D. tulip, daffodil, sunflower, oak tree
The nervous system is primarily composed of what type of cells?
A stem cells
B white cells
C skeletal muscle cells
D neurons
Answer:
D. Neurons
Explanation:
Nervous tissue is composed of two types of cells, neurons and glial cells. Neurons are the primary type of cell that most anyone associates with the nervous system. They are responsible for the computation and communication that the nervous system provides.
Answer:
D. neurons
Explanation:
This is the name given to all of the water on Earth.
atmosphere
hydrosphere
biosphere
lithosphere
Answer:
Explanation:
hydrosphere
2
since hydro means water btw
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Which two statements below correctly describe one similarity and one difference between cellular respiration and photosynthesis?
Cellular respiration and photosynthesis both involve water.
Cellular respiration uses sugar and photosynthesis produces sugar.
Cellular respiration and photosynthesis both use light to produce energy.
Cellular respiration requires light energy and photosynthesis requires chemical energy.
A. Statements 1 and 2
B. Statements 1 and 4
C. Statements 2 and 3
D. Statements 3 and 4
Answer:
The answer is A.
In the equation of breakdown of glucose (cellular respiration) and photosynthesis the end product of both is water, oxygen and carbon (iv) dioxide. And both involve glucose in the chemical reaction.
Explain how sampling methods are used in ecological studies
Answer:
When using random sampling techniques, large numbers of samples/records are taken from different positions within the habitat. A quadrat frame is most often used for this type of sampling.