Does human have link with their genes(from their family)?

Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.

How does a gymnosperm prevent itself from pollinating the same tree

In the water cycle , when does water undergo a chemical change