Choose the term that represents one of the body's defense mechanisms.

a. Chemical

b. Declining

c. Acute

d. Convalescent

What type of reaction occurred between the zinc and iodine? (Synthesis, decomposition simgile replacement, or double replacement)

A car is held motionless off the ground by a hovering helicopter. If the car's mass is 1500kg, what is the force on the car due to gravity? A. 153 N B. 1470 N C. 1500 N D. 14,700 N

Which of the following refers to a situation in which the use of harmful gas emissions is balanced by the replenishing of renewable energy sources? carbon neutral carbon stability carbon footprint carbon alignment

A solution that contains only a low concentration of solution.

What subatomic particle is responsible for changing an atom into an isotopes?

Facts about heat absorption and simple questions about heat absorption with answer

You measure a piece of wood with a meter stick and is it exactly one meter long. How many centimeters long is it?

When salt dissolved in water, what type of change occurs? A) physical only B) chemical only C) physical and chemical

Select all of the characteristics that define matter. A.) Matter has mass. B.) Matter has volume (takes up space). C.) Atoms and compounds are made out of matter. D.) All matter has the same density.

The science of observing and forecasting weather conditions is called