Imagine two planets, Planet Earth and Planet Mars in our Solar System. Imagine planets the same size, but Planet Earth has more mass than Planet Mars. Suppose two identical space vehicles with equal mass land on each planet. Which of the following statements is true?

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

i believe it would be c: tons.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u