PLEASE HELP, carrying capacities of each population. Will give brainliest

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

I’m stuck on this question cuz i’m stupid sksksksk

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.