Biology, 03.02.2020 02:59, madisynivy6

Scientists can determine if oxygen existed in earth's archean atmosphere by a. determining the amount of outgassing that occurred. b. looking for oxidized iron in rocks. c. looking at the amount of salt content in rocks. d. determining how many people survived

Answers: 2

Show answers

Other questions on the subject: Biology

Biology, 22.06.2019 02:30, maleyjustinr

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

Answers: 1

continue

Biology, 22.06.2019 04:00, knikni06

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

Answers: 1

continue

Biology, 22.06.2019 04:30, mildredelizam

Study this image which statement best describes the rock shown check all that apply

Answers: 3

continue

Biology, 22.06.2019 11:30, Jade1214

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Answers: 1

continue

Do you know the correct answer?

Scientists can determine if oxygen existed in earth's archean atmosphere by a. determining the amoun...