White blood cells protect the body from infection and disease-producting organisms. how might their function relate to their life-span. explain your answer.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Match the types of competition to their descriptions

Chimeras are interesting organisms that have two different sets of dna. chimeras occur when when two different zygotes fuse to form one organism. some chimeras have no outward symptoms,while some have two different eye colors it two different blood types what roles do mitosis and meiosis play in the process