Which elements are found in a high proportion in Earth's crust?

aluminum and iron

oxygen and silicon

calcium and sodium

potassium and magnesium

The earth is composed of four layers three of these layers are solid and only one is liquid which layer exits in the liquid state A. Crust B. Inner core C. Mantle D. Outer core

Conservation methods are needed worldwide for many reasons. All but one is a reason to support conservation

Which process makes a river become curvier? A. deposition B. weathering C. lithification D. erosion

Calculate acceleration without mass

Which of the following is not an accurate statement about the attitude of teenagers when driving

The Sun transfers light energy that is transformed into what kind of energy in plants?

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s.

If an atom has 34 protons and 40 neutrons, what is the mass number?

The atomic mass of an atom (in amu) is equal to Question 11 options: A. the total number of its protons, neutrons, and electrons B. the total number of electrons C. the total number of protons D. the total number of its protons and neutrons E.

12. Which of these describes the gravitational force from a planet?" O large and pulls objects toward itself small and pulls objects toward itself O small and pushes objects away from itself O large and pushes objects away from itself