An example of an animal that has a notochord but lacks a backbone is a

a. tunicate.

b. fish.

c. bird.

d. all of the above

If the population of rabbits in this ecosystem decreased dramatically because of certain environmental changes, which organisms' food supply would decrease? A. Owl and snake B. Jackal and wildcat C. Green plant and mouse D. Goat and wildcat

Did you hear about the two ducks in a race worksheet answers

Match the following words with the appropriate definition. achromatic logophile autophagy multiparous anthropometry A. The measurement of the human body. B. Giving birth to more than one offspring at a time. C. One who loves words. D.

Based on what you know of photosynthesis, what effect would clearcutting of large forests have on the amount of carbon dioxide in the atmosphere?

What is the final product of meiosis?

Blond hair is represented by the filled circles, and brown hair is represented by the empty circles. from this pedigree, what can be said about blond hair color?

Which of the following is an example of an X-linked recessive disorder? A. Huntington Disease B. Methemoglobinemia C. Color Blindness D. Sickle Cell Disease

Which factor do biologists calculate when they determine whether a population is in Hardy-Weinberg equilibrium? a. mutation rate, b. genotype frequencies, c. number of phenotypes, d. rate of migration

A lab technician observes a unicellular organism with two long flagella and two nuclei in the blood smear of a person. To which phylum does this protozoan belong? A. Zooflagellata B. Ciliata C. Sarcodina

The mixing of genes that produce a totally new individual is a?