PLEASE HELP NOW!!EXPLAIN Select the correct term to complete the statement about
agricultural runoff.

Agricultural runoff can affect the overall health of an ecosystem. In the
case of aquatic ecosystems, algae blooms, and the bacteria that break
down the dead algae, can deplete the
that fish and
other organisms need to survive. Fish-eating birds and other animals are
impacted because they rely on the fish for food.
A)oxygen
B) nitrogen
C) carbon

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)

Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.