Plants in a tropical rain forest usually have

A) thick, fleshy stems.

B) large broad leaves.

C) long vertical roots.

D) spiny or thorn skin.

What does buoyancy depend on? A. the density of the object and the density of the fluid B. atmospheric pressure and the density of the object C. The density of the object and the force of gravity D.

A sphere is filled with air. If the volume of the sphere is increasing at a rate of 569 cubic inches per minute, what is the rate, in inches per minute, at which the radius of the sphere is changing when the radius is 4 inches?

When a new branch containing a resistor is added to a parallel circuit, the total circuit resistance:?

Microwave ovens emit microwave energy with a wavelength of 12.3 cm. What is the energy of exactly one photon of this microwave radiation?

Which of the following would be expected to dissolve most rapidly in 100 mL water? A. 0.2 g powdered sugar B. 0.2 g granulated sugar C. 0.2 g sugar cube D. All will dissolve at the same rate.

When you jump straight up as high as you can, what is the order of magnitude of the maximum recoil speed that you give to the Earth? Model the Earth as a perfectly solid object.

Consider the Sun and Earth as a single system. How does the law of conservation of energy apply to this system? A) The energy from the Sun that reaches Earth is destroyed by Earth.

Based on the law of conservation of energy, which statement is false Energy is lost when machines don't work right. We can't add more energy to the universe. We can't destroy energy that exists in the universe.

A 120-g rubber ball is thrown with a speed of 10 m/s at an oncoming 900-kg car which is approaching at 30 m/s, and undergoes a one-dimensional elastic collision with the car.

Name two index fossils. Why are these fossils important to the practice of relative aging?