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disa [49]
1 year ago
5

8. How are anatomical structures used by scientists to determine how related organisms are

Biology
1 answer:
ivolga24 [154]1 year ago
7 0

Answer:

they use it to determine whether or not the animal is related by the bone structure and the structure of the body

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Why will many species of bird migrate to warmer climate during the winter
Doss [256]
Bird migrations began with the recession of the glaciers during the ice age. You will notice a great increase in insects in the spring time and early summer.The birds moved North to take advantage of this increase in the food supply that followed the warming in the spring and early summer. Their reproductive organs temporarily developed so they could lay eggs and raise a family. Look at the early flush of Night crawlers in the moist times of the early rains. By mid summer most of the insects have matured, mated and died. Their eggs have hatched and turned to larva and moved underground until next spring. The shortening of the days causes the reproductive functions to decrease and signals the birds that the food will soon become scarce. They move back to the area that makes it the easiest to find food and avoid freezing. which of course is the warmer climates nearer the equator. Not all birds move past the Tropics at approximately 30 degrees. Some like Chickadees may move down from Mi or Mn or Canada only as far south as Indiana. Some migrations may be quite short. For example from the mountains down to the plains. They don't generally reproduce in the warmer winter climes they migrate to. In the spring time they migrate along paths of the retreating glaciers. As the climate warms away from the tropics the birds follow the emerging insects etc to the birds selected breeding grounds.with increased insects and longer days to feed the hatching's. It is necesary to understand why they move to cooler climates in the summer to under stand why they move to eh warmer ones in the fall. As the days shorten the food supply dwindles and the babies have fledged. They move to warmer climates in winter to rest and refuel for the next years migration.
8 0
3 years ago
BRAINLIEST!! According to embryology, why do fish and birds have a common ancestor?
Blizzard [7]

Answer:

Both fish and bird embryos exhibit gill slits and a tail.

Explanation:

According to embryology, all vertebrates exhibit similar traits and structures at their embryonic stage. It becomes very difficult to differentiate between the embryos of a fish, and that of a bird, or embryo of a fish, and a human. These traits, however, disappear, as the case may be, as the embryo develops into an adult. For example, in the case of the embryo of a fish, and a bird, both shows gills slits at their respective embryonic stage. However, the gill slits in fish develop into gills, whereas in the case of birds, it disappears as the embryo develops into an adult.

5 0
3 years ago
Read 2 more answers
What are two important parts of the human digestive system
slamgirl [31]

Answer:

Regions of the digestive system can be divided into two main parts: the alimentary tract and accessory organs.

Explanation:

8 0
1 year ago
Which best explains why a pyramid is used to represent energy flow within an
Nat2105 [25]

Answer:

The answer is A

Explanation:

Because available energy decreases as you go up

5 0
3 years ago
Read 2 more answers
Plucking _____.
hodyreva [135]

Answer:

Plucking...happens when glaciers pull rocks from the earths surface

So I believe that your answer would be 3

Explanation:

Plucking is removal of entire chunks of rock. Courtesy of Rocky Mountain National Park. Glaciers can shape landscapes through erosion, or the removal of rock and sediment.

Hope this helps:)

8 0
2 years ago
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