Aland developer and several ecologists are discussing how a parcel of private land should be developed while saving 20 hectares as natural habitat. the land developer suggests that the 20 hectares be divided into twenty separate 1-hectare areas. the ecologists suggest that it would be better to have one intact parcel of 20 hectares. what is the significance of these different arrangements of the 20 hectares?

a. the isolated hectare piots increase the ability of individuals to disperse from one habitat to another.
b. the large plot will create more inbreeding in many species
c. there really is no difference: they should both work equally well.
d. the isolated plots are more vulnerable to edge effects.

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

You have a solution that contains phospholipid vesicles in a test tube. these vesicles have phospholipid bilayers, but do not contain any membrane transporters. you add a number of different molecules to the solution, and wait a period of time for them to equilibrate. if you could measure the concentration of each molecule, for which of the following would you expect to measure equal concentrations inside and outside of the vesicles? assume for this question that the overall osmolarity inside and outside the vesicles is the same (that is, there is no appreciable diffusion of water across the membrane). (select two answers) an amino acid with a hydrophobic side-chain a small non-polar molecule a negatively charged ion a small polar molecule a small lipid hormone

9. wind power creates pollution. water air soil noise