What is the term that is used to describe a key factor required to start a fission reaction?

chain reaction

critical mass

neutron absorption

neutron moderation

Liza is an early-maturing girl who just reached menarche. She is very upset and is having a difficult time adjusting. Which of the following is the most likely reason for Liza's feelings? a.

Which level of organization refers to all the type of environments in which organisms can be found?

What is a function of the backbone in animals? A. It protects against predators. B. It regulates blood glucose. C. It surrounds the spinal cord. D. It limits movement.

Are the leaves of oats dicots or monocots

Responding to the environment by maintaining a stable environment despite changing external conditions is

3 types of reactions that can be catalyze by enzymes

Which type of sedimentary rock forms from weathered sediment? chemical clastic coal organic

suppose you mix baking soda and white vinegar. what signs might indicate that a chemical change is occurring?

Which term means the release of a tendon from adhesions?

To produce 100% offspring with yellow pods and wrinkled seeds, what parental genotypes must a researcher use?