In taxonomy, what are groups of organisms called?

What is the main source of potential energy needed for cellular metabolism? enzymes ATP proteins carbohydrates

A squirrel population lives in an area. Over many years, a river in that area grows wider and stronger, eventually forming a canyon.

Marquis is using a balance to measure the mass of a rock. After recording a reading, he removes the rock, clears the balance, and measures the rock again using the same balance. He repeats this process two more times.

Lydia walks 3 meters in 2 seconds she stops and looks up at the sun for 5 seconds she proceeded to walk for 5 more meters in 3 seconds what was the speed lydia walked?

As Joe prepares to spar with a tae kwon do opponent, his heart rate and respiration rate increase. These are indicators that which branch of the nervous system has been activated? a. central b. autonomic c. parasympathetic d. sympathetic

The science of heredity

At which age range does the most intensive myelination of nerve cells occur?

The role of the excretory system is to rid the body of toxic waste products. Which of the following body systems also plays a direct role in removing waste products from the body? A) endocrine B) nervous C) respiratory D) skeletal

What supplement might be recommended by the food and nutrition board?

Which reflex constricts pupils when we view lose objects?