Which of the following animals could detect sound at a frequency of 67,000 Hz?

A. Elephant

B. Bat

C. Dog

D. Tree frog

Which component of blood protects us from invading foreign material? plasma erythrocytes thrombocytes leukocytes

Why did Gregor Mendel study pea plants? a. They exhibit only a single trait. b. They produce flowers. C. They are easy to grow. D. They reproduce sexually.

Chlorophyll molecules are in which part of the chloroplast?

Which is the most common type of white blood cell apex?

What factors lead to a braided channel pattern?

Which is true of low resistance wires? A. The shorter a wire is, the lower resistance it will have. B. The longer a wire is, the lower resistance it will have. C. The shorter a wire is, the higher resistance it will have.

The flow of blood into an individual capillary is regulated by

In which area are the natural warm deserts of Earth primarily located? A) 0-15 degrees north and south of the equator B) 15-30 degrees north and south of the equator C) 30-45 degrees north and south of the equator D) 45-60 degrees north and south of

Large cell that engulfs foreign material and worn out red cells:

What direction do electrons flow in an electrolytic cell?