Fish are classified as vertebrates because they have

a. a brain.

b. a backbone.

c. two germ layers.

d. bilateral symmetry.

What is freud's term for primitive, biological side of personality?

Which of the following is NOT an example of a fossil? a fern imprint in shale a trilobite in sandstone footprints in snow a petrified tree trunk

Ken experienced a blow to the back of the head, which resulted in problems coordinating his balance and his sensory input. which part of ken's brain has most likely been damaged? reticular formation

How does water particles in waves move

N his study of pea plants, Gregor Mendel used which method to produce offspring?

Many functions in the body are controlled by special compounds. Which statements about these compounds do you think are true? Check all that apply

Which curve was most likely generated from analysis of an enzyme from a human stomach where conditions are strongly acid?

Based on the text, why might the California's Division of Safety of Dams have ordered in 2001 that the Calaveras Reservoir be kept at no more than 40% full?

What role does nitrogenous bases have in DNA and RNA

How do carnivores (which eat only meat) obtain nitrogen for building critical organic molecules? A) They eat consumers, which ate plants, which absorbed it from the soil. B) They absorb the nitrogen in the ground through their skin.