Biology, 08.09.2021 03:40 RealSavage4Life
Why do astronomers use astronomical units (AU) instead of kilometers (km)?(1 point)
A There are no km in outer space, only AU.
B AU is used in astronomy, while km is used in physics.
C Large distances are easier to express in AU than in km.
D AU is used for spacing, while km is used for length.
Answers: 3
Biology, 22.06.2019 10:00
Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
Answers: 2
Biology, 22.06.2019 13:00
In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.
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Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***
Answers: 1
Why do astronomers use astronomical units (AU) instead of kilometers (km)?(1 point)
A There are no...
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