What characteristics do today's plants probably share with their algal ancestors?

Certain small towns in the western United States have remained isolated and inbred since their settlement many years ago. Some alleles are more common in these communities as compared to the rest of the population.

Given the general chemical formula X2O, to what group in the periodic table does the Period 2 element represented by X belong? A. 1 B. 16 C. 2 D. 17

What characteristic of phospholipids causes semipermeability of the cell membrane

The El Niño Southern Oscillation phenomenon provides good opportunities to study: A) Global warming B) Prevention, preparedness and mitigation of El Niño-induced disasters C) Starvation in third world countries D) Effects of climate variability on

A gardener is growing plants in his backyard and decides to mate a Tall, White flowering plant (DDww) with a Dwarf, Purple (ddWW) flowering plant of the same species.

Generally speaking, how does the age of geologic structures in florida compare with the age of those in colorado?

Which kind of farming is associated with less soil erosion?

For water to enter the ground there must be?

According to endosymbiosis theory, what is the most likely explanation for the origin of the two mitochondrial membranes

What is the biological significance of the elephant graveyard in the movie "The Lion King"?