Note that rainfall results in a net input of nutrients into the ecosystem, whereas erosion and leaching (the loss of soluble nutrients from the soil in groundwater) represent a net loss of nutrients. In Hubbard Brook, as in most temperate forest ecosystems, the amount of nutrients gained and lost through rainfall and erosion or leaching, respectively, is small compared to the total amount of nutrients moving around the cycle.

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called