How can you tell a vein from other structures in the leaf?

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

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.