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List and describe three ways to detect the interstellar medium.

2. How do we determine the following about a star?

a. Size

b. How far it is

c. Temperature

d. Mass

e. Velocity

Why is nutrient limitation usually more intense in agricultural systems than in natural ecosystems? because the use of crops removes nutrients from the ecosystem. because crops need more nutrients than natural vegetation O because there is a shift from phosphorus to nitrogen limitation when crops are planted because natural ecosystems do not experience nutrient limitations because of the emergent properties of plants and soils. Question 26 1 pts Same neonle arane that we may run out of phosphorus fertilizers in the coming decades but no

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