Why do some species employ both mitosis and meiosis, whereas other species use only mitosis?
a) they need meiosis if the cells are producing organs such as ovaries.
b) a single-celled organism only needs mitosis.
c) they need only mitosis to make large numbers of cells such as sperm.
d) they need only meiosis if they produce egg cells.
e) they need both if they are producing animal gametes.

Why do bacteria thrive even in hostile environments

Me with biology endocrine system crossword also image left i need with hw

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.