The smallest unit of a compound is called a
a. ion
b. molecule
c. isotope

Energy flows from the producer level to the level. is called

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?