Humans breathe through bronchi.

Which structure do insects have for breathing?

A. Skin

B. Tracheae

C. Lungs

D. Gills

Is baking soda acid?

How do the strength and the cohesion of clay-rich regolith or soil change with the addition of water?

The [H+] of a solution is 1.0 x 10-4 M. Classify the solution as acid, base, or neutral. What is the [OH-] of the solution? A) Acid; 4 B) Base; 10 C) Acid; 1 x 10 - 10M D) Base; 1 x 10 - 10M

Which of the following species has (a) equal numbers of neutrons and electrons; (b) protons, neutrons, and electrons in the ratio 9:11:8; (c) a number of neutrons equal to the number of protons plus one-half the number of electrons?

What mass (g) of potassium chloride is contained in 430.0 mL of a potassium chloride solution that has a chloride ion concentration of 0.193 M?

According to the kinetic molecular theory, when a gas particle hits something what will happen?

Protons and neutrons are made from which of the following? hadrons down quarks only up quarks and down quarks up quarks only

Not all of the water falls as rain, snow, or sleet evaporates. What happens to the rest of the water?

58.5 million excess electrons are inside a closed surface. What is the net electric flux through the surface?.

Nitrogen monoxide and oxygen, both colorless gases, form a red-brown gas when mixed. Nitrogen monoxide and oxygen are called the