What do all four of these molecules have in common?
protiens, carbohydrates, lipids, nucleic acids
a.
they store and transfer information.
b.
they are found in living things.
c.
they dissolve in water.
d.
they store energy.

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

How does land development destroy ecosystems? it increases human carrying capacity too rapidly. it converts them into residential or agricultural areas. it forces humans to import non-native plants and animals. it expands the natural range of native wildlife species.

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.