Which kind of worm has a closed circulatory system?

a planarian

b fluke

c pinworm

d an earthworm

What are examples of natural resources?

Why are hurricanes common in Florida?

How do action potentials move from one neuron to another?

Why is protein synthesis important? Select one: a. because it is the process which gets your DNA's information to make the proteins which make up many of your traits b. because it is essential in repeating the DNA sequence within the nucleus c.

The three bacterial shapes in Model 1 are referred to as coccus (sphere), spirillum, and bacillus (rod). Label the diagrams in Model 1 with the correct descriptions.

Which route represents the path taken by the European explorer Christopher Columbus? A) 1 B) 2 C) 3 D) 4

Which gas is the most abundant of the trace gases? A. nitrogen B. oxygen C. argon D. carbon dioxide

Describe the central dogma of molecular biology, briefly describe the processes of transcription and translation.

magine that the animal body produced sperm and eggs with mitosis instead of meiosis. What chromosome number would the autosomes of the third generation have if the first generation had four chromosomes

A well supported testable explanation of phenomena that have occurred in the natural world is called