what are structural proteins; one resists stretching to give the extracellular matrix strength and the other allows for some stretching to give the extracellular matrix resilience and flexibility?

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.

What would be the most likely result if the ph of the stomach were increased to 5

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors