Question 3: Shania wanted to see if eating apples would help her do better on her classwork. The
first day, she didn't eat any apples. On day 2, she ate one apple; on day 3, she ate 2
apples; and on day 4, she ate 3 apples. Each day, she recorded the grades she got on
her science work.
Independent Variable?
Dependent Variable?
Controlled Variables?

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

i thinking chemical change

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements