Answer:
d) polyps; calcium carbonate
Explanation:
The Acanthaster planci It is a kind of invasive starfish, which destroys corals: it has poisonous spines and feeds on coral polyps at the expense of the reef.
On the other hand, CO2 reacts with water, forming carbonic acid and reducing the available calcium carbonate, an essential element so that marine organisms, from clams to hedgehogs, can form their skeletons and shells.
B) a hollow ball of cells
Because if you are growing food and we don’t get enough rain then our crops don’t grow. We don’t have enough food for everyone
Hmmm I’m not quite sure about that
Answer:
i watch movies or get on my phone
Explanation:
