Jeffrey wants to lose weight by using caffeine to help with exercise. He asks himself, “Will caffeine raise the heart rate to help burn more fat?” He tries to test this out by comparing the heart rates of his neighbors, 3 brothers who are triplets. One of the brothers drinks Pepsi, another drinks a double shot of espresso (which is coffee with twice the normal amount of caffeine) and a third brother drinks only water for comparison. Jeffrey finds out that the triplet with the double shot of espresso had the highest heart rate.
55. What is the independent variable for this experiment?

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)

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