WILL MARK BRAINLIEST!
How does an enzyme help a reaction to occur in the cell?

It gives the reaction more energy.

It increases the amount of energy needed.

It takes excess energy away from the reaction.

It lowers the energy needed for the reaction to occur.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian