What did Crick describe about the direction of each nucleotide strand? A. They were parallel, but were oriented in opposite directions.
B. They were perpendicular to each other.
C. One wrapped around the other.
D. They were parallel, in the same direction.

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

What type of competition exsist between two species. turtles and fish

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey