Stems have all of these functions except a. storing food and water b. absorbing soil nutrients c. supporting the plant d. moving materials between leaves and roots

Which organelle breaks down sugar molecules that supply energy to the cell ?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.