The present giraffe has a long neck as compared to

its ancestors. It could be due to

(a) Natural selection

(b) Isolation

(c) Speciation

(d) Inheritance of acquired character

What is the most important digestive function of the stomach

How is pattern formation in plants established?

Is the freshwater eel a flatworm or an annelid

What differences would you expect to see in a population made up of individuals whose chromosomes experience crossing-over frequently compared with a population made up of individuals whose chromosomes do not cross over? Explain your reasoning.

Vertebrates digest food in digestive tracts. Cnidarians accomplish the same function using A. Specialized teeth B. Crops and digestive enzymes. C. Gizzards. D. Gastrovascular cavity's

The cell membrane has many proteins embedded in it. These proteins have many different functions ranging from transport of materials to cell surface identity markers. True False

The secretions of the gallbladder, liver, and pancreas enter the

How do you think a DNA molecule makes a copy of itself?

Which type of molecule is fat? lipid carbohydrate protein nucleic acid

Explain how differences in the niche requirements of organisms can contribute to community patterns such as zonation