Help Me PL . U gotta hurry 4. What is a species?

A. a group of organisms that can reproduce and have fertile offspring

B. the process by which inherited traits in a population change over generations

C. the process by which individuals that are better adapted to their environment are more likely to survive and reproduce

D. a characteristic that improves the ability of individuals in a population to survive and reproduce

Which best explains how this maneuver unblock a person's airway?

Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.