I think it is keystone. If they were not there the population of urchins would go up and the kelp would go down.
6 protons is the amount of electrons so it would be... 6 protons 6 neutrons 6 electrons in all so it is probably 18 protons but im not to sure but..idk good luck
It is process of producing female gametes and called creation of ovum
<span> benefit of an uneven production of gametes in oogensis is
</span><span>One haploid cell receives the majority of the nutrients from the cytoplasm
</span>so i conclude option A is correct
hope it helps
