Which are characteristics of mammals? Check all that apply. internal fertilization
three-chambered heart
I endothermic
highly developed nervous system
several nearly hollow bones
I always live on land

What are chlorofluorocarbons made of

Will mark brainliest if correct/available! which of the following statements is true? all plants need flowers to sexually reproduce. sexually reproduced offspring are identical to their parents. fertilization always occurs inside the female's body. a body cell has twice the number of chromosomes as an egg cell.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.