What is the number of chromosomes in each human sperm cell or egg cell?

What is the function of the root cap? a. extra-absorbent cells in the root cap absorb more water and nutrients b. protect the meristematic area of the stem c. contains sensors for sunlight d. increases surface area of the root

Why do mountaineers become breathless as they reach high altitudes

Closing romer’s gap. what is the significance of the new fossil evidence found in scotland? answer in claim evidence and reasoning