What process (mitosis or meiosis) do pollen and egg cells undergo?

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from