Scientists discovered that small-footed and large-footed lizards shared a common ancestor. Today they are no longer able to interbreed together. What is this an example of?

A.
speciation

B.
succession

C.
spontaneous generation

D.
natural selection

Answers

Answer 1
Answer: That would be A) speciation

Answer 2
Answer: I agree that  the answer is speciation


What is speciation: basically what it means is that there is a lack of ability to reproduce because  the two similar species have become different through the process of evolution.

Hopefully this helped and good luck.  

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16. Plants gather the sun's energy with light-absorbing molecules calleda. pigments.
b. thylakoids.
c. chloroplasts.
d. glucose

Answers

Answer:

C

Explanation:

chloroplasts captures energy from the sun which is needed for the growth of a plant and it is also needed in the process of photosynthesis

Final answer:

Plants use pigments, primarily found in chloroplasts, to absorb the sun's energy. These pigments are housed within components of chloroplasts called thylakoids. The absorbed energy is used to produce glucose through the process of photosynthesis.

Explanation:

Plants gather the sun's energy with light-absorbing molecules called pigments.

Mainly, these pigments are found in organelles known as chloroplasts. Inside the chloroplasts, pigments like chlorophyll absorb light energy, and this is then used to produce a type of sugar called glucose in a process called photosynthesis.

So, the answer is option 'a' as pigments absorb the light from the sun.

Thylakoids are a component of the chloroplasts where the pigments are housed, and glucose is the end product of this process, not the light-absorbing molecule.

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Which process is used by most producers to turn sunlight into food energy? 1.) photosynthesis 2.) cellular respiration 3.) transpiration 4.) evaporation

Answers

Photosynthesis is the process used by most producers to turn sunlight into food energy. Therefore, the correct option is A.

What is Photosynthesis?

Green plants, algae and some microorganisms convert solar energy into chemical energy in the form of organic compounds, especially glucose, through a process called as the photosynthesis. In this process, using the energy of sunlight and the green pigment chlorophyll, the gases carbon dioxide (CO2) and water (H2O) are converted into glucose (C6H12O6) and oxygen (O2).

Most life on Earth derives its energy from photosynthesis, which also forms the basis of the food chain in which plants are consumed by animals, which in turn eat other species. Photosynthesis is the process used by most producers to turn sunlight into food energy.

Therefore, the correct option is A.

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Answer: The answer is Photosynthesis

Both the tundra and the desert experience/contain:I. permafrost
II. low precipitation
III. poorly developed soils
IV. animals with extreme adaptations
V. hot days and cold night

A) II only
B) I and II only
C) II, III, and IV only
D) III, IV, and V only

Answers

Answer:

C) II, III, and IV only

II. low precipitation

III. poorly developed soils

IV. animals with extreme adaptations

Explanation:

This is something that generally comes from environmental knowledge.

I. Permafrost. This is commonly found in Tundra's, and is arguably the definition OF a tundra. Tundra's have land with underlying permafrost, which prevents plants that rely on large roots from breaching the land. Deserts don't have THIS problem, they just have sand and overly dried rock-soil.

II. Low precipitation. This is true of both deserts and tundras. If you've ever seen a desert-set- movie, you'd know that the prominent issue of deserts is that they never seem to have water. While Hollywood isn't to be considered accurate, it DOES have some truth here. Deserts are infamous for their extremely low amounts of precipitation (rain). Tundras are nearly identical, though due to other reasons.

III. Poorly developed soils. Yes, Tundras and Deserts both have terrible, terrible soil, for opposite reasons. Tundras are known for extremely low temperatures and little precipitation. Deserts are known for extremely hot temperatures and little precipitation. With Tundras, permafrost lays beneath all the land, preventing any serious plants from growing (outside of resilient grasses, weeds, and shrubs). Deserts have the opposite issue... they average 102 degrees during the day and 24 degrees at night. Excluding the typical presence of sand, this makes for VERY rough soil, as it's baked throughout the day and hardened at night.

IV. Animals with extreme adaptions. Yes. In Tundra's, you'll find a majority of animals that have found ways to adapt to the extremely low temperatures... namely foxes, hares, reindeer, wolves, birds, and some smaller mammals. In deserts, you'll find animals who've adapted to living and thriving in hot temperatures and tolerating the night temps. . .namely reptiles, foxes, scorpions, and armadillos, along with some birds.

V. Hot days and Cold nights. As mentioned before, Deserts average 102F during the day and 24F at night. On the CONTRARY, tundras average -30F to 20F. Obviously, this answer choice is only applicable to deserts.

Hope this helps!

~Troy

Review the following DNA sequences.Original DNA Sequence

A T T G C T A A G T C A

Mutated DNA Sequence

A T T G A T A A G T C A

Which type of mutation occurred?


insertion


deletion


There is no mutation.


substitution

Answers

Answer:

The answer is substitution

Explanation:

Substitution is a kind of mutation that occurs when one nucleotide is change by a different one. In your example, only change the fifth nucleotide (C by A) so, this is an example of point mutation (onle one nucleotide changed).

The other options are differents kinds of mutations that the one shown in your question.

Please help with biology!

Answers

I believe the answer is A.

The Calvin cycle:produces glucose and water
is the second stage of photosynthesis
does not require light
all of the above if u would help wich one would it be

Answers

Answer: Calvin cycle is the second stage of photosynthesis and does not require light.

Explanation: Photosynthetic reactions are divided into two phases: light dependent reactions and carbon fixation reactions. Light dependent reactions is the first stage of photosynthesis in which sunlight is used to split a molecule of water and the energy generated is conserved in form of ATP and NADPH.

Calvin cycle is the second stage of photosynthesis. It is also called carbon fixation reactions. These reactions do not need light to occur. It occurs in the dark, the ATP and NADPH produced in light dependent reactions are used to drive these reactions. In Calvin cycle, carbon dioxide is assimilated through a cyclic pathway to produce triose phosphate which is a precursor for glucose and other related molecules such as starch.

Final answer:

The Calvin cycle is the second stage of photosynthesis.

Explanation:

The correct statement is the second stage of photosynthesis. The Calvin cycle is a series of reactions that occur in the stroma of chloroplasts in plants. It takes place after the light-dependent reactions and uses the energy stored in ATP and NADPH to convert carbon dioxide into glucose. This cycle does not directly produce water and does not require light.

Also known as the Calvin-Benson cycle, is a series of biochemical reactions that take place in the stroma of chloroplasts during photosynthesis. It converts carbon dioxide and energy from ATP and NADPH into glucose and other organic molecules. The Calvin cycle is a crucial part of the light-independent reactions of photosynthesis.

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