What are the four types of vaccines that can be created?

How is mitosis different in plants and animals? a. in animals, the cell membrane pinches together. b. in plants, the dna is one circular chromosomes. c. in plants, there are no sister chromatids. d. in animals, a new cell wall forms.

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?