The answer is not A or D. I'll reread to get the correct answer!!!
Calcium, a chemical element with symbol Ca and atomic number 20. Calcium is a soft grayish-yellow alkaline earth metal, fifth-most-abundant element by mass in the Earth's crust
Answer: explanation below
Explanation:
Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed.
Their digestive systems cannot digest solid foods until that age
Answer:
most likely b, a population is many living with each other and not just one species
