Arthropods were the first animals to successfully invade land from the sea
Explanation:
base on the person opinion
I have a question are you asking what are the molecules of a shark or something
Answer:
B and D? or the second and fourth ones
Explanation:
There are a few vital characteristics to mention here. First we have to know about which ions we're talking about as the cellular membrane is semi-permeable (lets some flow freely through the membrane and some not), it depends on the size of the compounds, and also the charge that a molecule has.