The first land animals had to adapt to this whole new set of conditions that were significantly different than the ones in the water.
One of the biggest challenges was to protect the embryo in these new harsh conditions. The amphibians and members of earlier lineages such as fish are dependent on water for their reproduction, but reptiles, birds, and mammals have developed the amniotic egg during the course of their evolutionary history enabling them to produce offspringing on the ground.
Members of this group either carry their offspring inside the female's womb or lay eggs that are protected with an outer tough layer. Both the young in the womb and the ones inside an egg are protected but the embryonic membranes amnion and chorion that contain water and nutrients necessary for the development of the embryo and therefore are called amniotes.
Answer: so i saw a easy 5 pts and i thought to myself "how can I refuse"
A major aspect of the explanation flying creatures can fly is on the grounds that their wings make airfoils that can part the air.
Explanation:
We likewise discover airfoils looking like minuscule wings on bugs or tremendous wings on planes. Be that as it may, human arms are bad shapes for airfoils. As you've watched, regardless of whether you attempt to fold, you won't fly.
Answer:
Genes causing diseases could be replaced through the use of recombinant DNA.
Explanation:
It's the study island answer for one. Two, we're trying to get rid of diseases to help us in the long run and genetic engineering makes sure were only doing the best for our bodies !
Answer:
viruses are re produce through cells
Explanation:
the virus puts its DNA it to the c ells nucleus so when mitosis happens the cell will be an exact replica of the virus