Which is a way that organisms from a single species are always similar to each other?

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Why is it important to study each branch of earth science?