Which one of the following is the pigment found in redheads?

a) Keratin

b) Melanin

c) Pheomelanin

d) Cortex

How do prevailing winds control precipitation totals in a region? Check all that apply. They cause oceanic winds to carry water vapor. They move warm air masses in certain directions. They increase the occurrence of droughts in the winter.

What is an apparent change in the frequency of sound or light waves known as?

Assuming the same current is running through two separate coils, why is it easier to thrust a magnet into a wire coil with one loop than one with four loops?.

In outer space, where there is no gravity or air resistance, an astronaut pushes on two moon rocks, using 12N of force on each. One rock has a mass of 2 kg, the other has a mass of 4 kg. Which statements are true? (Mark all true statements) A.

If an object is neutrally buoyant (does not sink or float) in fresh water, the same object placed into salt water wouldA sink. B either sink or float. C do nothing. D float.

A sound wave has a frequency of 510 Hz in air. Which of these is closest to the wavelength of this sound? (The speed of sound in air is 343 m/s.

The diagram below shows the process of distillation of saltwater into pure water. Where is the pure water in the diagram? a. A b. B c. C d. D

In what ways, would understanding the body positions, directions, and planes assist you with tasks related to the integumentary, skeletal/muscular, and digestive systems

Concave & convex lens of same mass & radii rotate about an axis passing through their centre & perpendicular to the plane which one will have greater mnment of inertia

Which of the following statements is true? A. Both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction. B. Nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. C.