We label the human sex chromosomes with X's and Y's. For example. A boy's chromosomes are XY. A girls chromosomes are XX. When a child is born, they get an X from their mother, and either an X or Y from their Father, thus determining their sex.
Crocodiles belong to Reptiles. Reptiles are <span>a cold-blooded vertebrates. </span>
B. Tropical rain forests
Explanation: if you look at a list of most endangered species, they live in rain forests
Answer:
At least B and E
Explanation:
C might also be one too, but I'm not sure
