In a multicellular organism, nerve cells are different from muscle cells because -each cell type has a unique set of transcription factors and repressors, so it expresses a specific set of genes.
-each type of cell within a multicellular organism contains a different set of genes.
-random events within each cell regulate the expression of genes and result in different genes being expressed in different cells.
-cells gain and lose different genes during embryonic development, so each cell in an adult only has some genes from the original set.

2polhiswhere is the energy in a glucose molecule stored? ooa. inside the carbon atomsb. inside the protonsc. in the bonds between the atomsood. inside the hydrogen atoms

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

How is the carbon cycle related to global warming ?