Which long-term environmental change could allow some organisms to flourish?

drought
ice age
tsunami
large asteroid impact

Because of its structure the cell membrane is known as a phospholipid ? a.bilayer b.molecule c.fluid d.barrier

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.

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?