Binding to different receptors
Then the brown beetles die out and there are more green beetles because they have higher chances of surviving
Answer:
papillary muscles
Explanation:
The flaps of the cuspid valves are held in place by the papillary muscles
The answer is d. Fossil b belongs to the same period as the trilobite
Answer:
one is made of silk and one is made from branches and anything to keep it together and for padding
Explanation:
the spider makes the webs out of silk and it traps anything that goes through it. the birds make the nests from branches and litter.
