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Daniel [21]
2 years ago
13

Un deportista quiere batir la

Biology
1 answer:
kati45 [8]2 years ago
5 0

Answer:

????? english

Explanation:

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Why must offspring of birds develop an egg with a hard structure
Sati [7]
The hard structure is to protect the offspring from harm. If you seen a mother bird before they often sit on their eggs to keep the baby birds warm and safe, that is why the eggs have a hard structure, so the mother bird doesn't accidentally crush the baby birds. 
Plus I believe that when the baby birds are about to hatch they will peck at the egg cracking it slightly signally the mother bird to get off of the eggs and watch their babies being born. 

Hope this helped :)
Have a great day 
5 0
3 years ago
Please help this is my last question but I don’t know what the answer is!!! The question is in the image! Please answer soon if
BigorU [14]

Answer:

One of them is the variance of the gene pool--in other words, the genetic adaptations plants and animals have help them to survive. That is where the phrase "survival of the fittest" comes from; if one is not genetically fit to survive in their environment, they will die off and their genes will not be added to the gene pool, making it easier for organisms with more fit genes to reproduce and add to the gene pool.

Another is the availability of resources. It is very hard for an organism to survive without food, water, and shelter. If the organisms of a species live in an environment with a lack of resources, they will die off, thus making them unable to reproduce and therefore go extinct.

Also, the presence of predators makes it difficult for a species to survive. Predators preying on prey make prey poulations go down and predator populations go up. However, going back to the gene pool, many organisms have adapted to hiding from predators with means such as camouflage or burrowing.

Finally, the general conditions of their environment. This one is self-explanatory. For example, you would not expect to find a polar bear in the desert or a cactus in the Arctic. The conditions are simply not right for their survival and they will die off. This is also why birds migrate--they need to go somewhere warm in the winter to keep themselves warm!

Hope this helps!

Explanation:

3 0
3 years ago
Which cells have DNA
RSB [31]

Answer:

I'm not sure if im 100% understanding the question but all cells have DNA

Explanation:

Aside from red blood cells and cornified cells, all other cells in the human body contain nuclear DNA.

7 0
3 years ago
Which branch point represents the most recent common ancestor of all bears?
vladimir1956 [14]
Im pretty sure the answer is Branch point 1


3 0
2 years ago
When you go to a salon, do you ask to straighten your hair or iron your hair?
lara31 [8.8K]

<em> straighten your hair</em> ! its worded properly and its the most common way of saying it.ironing your hair sounds wrong and difficult its much better to cut to the chase and say you want your hair straightened

always be professional in a work place! :)

have a good day <3

6 0
3 years ago
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