Video link: What is Natural Selection?

1. What do the call the idea that traits are passed down from generation to generation and

sometimes undergo changes or modifications over time.

Watch the video "Mutations in our Genome e." Why do you think the narrator used the term "successful mistakes" for his chromosomes?

The main reason that is important to test only one variable at a time so that

Which sphere is not involved in the water cycle

What happens when you mix milk and lactase enzyme

Which of the following best describes a spiral galaxy?

When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? A) latent periodB) fatigue periodC) relaxation periodD) refractory period

Evan and his friends are so surprised to find deer in their subdivision! His mom is getting mad because every morning they are in the garden eating everything they see.

HURRY! Which best describes the structure of the molecules that make up proteins? O A. Carbon + hydrogen + oxygen B. Phosphate + sugar ring + nucleotide base O C. Hemoglobin + oxygen + iron O D. Carboxyl group + amino group + side chain

Which plant cell organelle converts chemical fuel into packets of chemical energy that can power the cell?

6. What mechanisms or events are needed for a star to make heavier elements than iron?