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alexandr1967 [171]
3 years ago
12

Theory 1 what caused the giraffe neck to become longer

Biology
1 answer:
mash [69]3 years ago
4 0
Fossils are found of giraffes with short necks.
Lamarck believed the giraffes stretched their necks and passed it to their offspring
necks grew longer due to stretching.
giraffes need long necks for food and evolution provided it to them
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The graphs show the age structure for each of three countries. The horizontal bars show the percentages of the population in eac
11Alexandr11 [23.1K]

Answer:

C. More young children live in Country 1 than in the other countries.

Explanation:

The described graph shows that more young children live in Country 1 than in the other countries. This is clearly stated in the first paragraph: <em>This is the greatest percentage of any 4-year age span in all three countries.</em> This automatically means that options B and D are incorrect.

Option A is the second-best one. However, the fact that there are more young children in Country 1 doesn't necessarily mean that their death rate is lower. It could be, but correlation doesn't equal causation. There are more young children probably because the younger population is more present in that country and more children are born.

This is why option C is the correct one.

7 0
3 years ago
What happens to alleles between the p generation and the f2 generation?
ikadub [295]

<span>During the development of a gamete, the two alleles of the P generation separate.  Each gamete carries one allele from each parent which randomly pairs in the F1 generation. This mechanism repeats when F1 plants cross and yield F2 plants.  The outcome of the F2 generation would then have new combinations of alleles which can be different compared to the preceding generations.</span>

3 0
3 years ago
Which lymphoid organ extracts aged and defective blood cells and platelets from the blood in addition to storing some of the bre
Radda [10]

Answer:

The spleen

Explanation:

The spleen acts as a filter for blood by recycling old and defective red blood cells. It also stores red blood cells, platelets and white blood cells.

6 0
3 years ago
What phrase best defines a star system? a group of hundreds of stars a group of two or more stars a group of stars that formed a
MAVERICK [17]

There are different star systems. Binary star systems consist of two stars. Multiple star systems consist of two or more stars. The meaning of star system is "A small number of stars."

I think it's either A) a group of hundreds of stars, or B) a group of two or more stars. I would assume it's B), but i could be wrong.

Hope this helps!


4 0
3 years ago
Read 2 more answers
List 6 thing that causes climate change
hichkok12 [17]

Explanation:

Variations in the sun's energy reaching Earth

Changes in the reflectivity of Earth’s atmosphere and surface

Changes in the greenhouse effect, which affects the amount of heat retained by Earth’s atmosphere

5 0
4 years ago
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