Biology, 25.11.2021 14:00 marie1211

Why did the early atmosphere not have much oxygen?

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Biology, 21.06.2019 15:00, birdman37361

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

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Biology, 22.06.2019 06:00, crawfordricky84

Can someone i have no idea of how to do this.

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Biology, 22.06.2019 07:30, claudioocampo5621

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.

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Biology, 22.06.2019 10:00, AM28

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?