Students in mrs. nichols' ecology class noted that coastal regions in the state were changing. areas that had once been only occasionally submerged now remained underwater all year; even low tides did not uncover the once marshy areas. the ecology students hypothesized that the most likely reason for this change in sea level and therefore habitat was
a) global warming.
b) off-shore oil drilling.
c) increased sedimentation.
d) decrease in ocean density.

The model illustrates a process by which a substance is taken up by a cell

New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.