Animal cells tend to not have a uniform shape. This is because of the lack of which cell structure? chloroplast

nucleus

cell wall

cell membrane

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?