Which layer of Earth has the most influence on Earth's magnetic field?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Which statement best compares aerobic and anaerobic respiration