Science!

what is a soil horizon?

a. a layer of soil with characteristic properties

b. bare soil from which all vegetation has been removed

c. a pictorial view of soil showing its ecosystem

d. soil that is still mostly rock material
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An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

What are the pros and cons of quadrat sampling?

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what