Which of the following is an extrusive igneous rock that contains so many air pockets that it often floats in water

a.) obsidian

b.) granite

c.) gabbro

d.) pumice

How many things are in a plant cell

There are three types of neurons. Neurons carry information from sense organs to the spinal cord and brain. In the brain, carry information from the sensory neurons to neurons, which causes muscles to contact and move.

How to ecosystem services affect human sustainability

Which unit of measurement is used in the metric system? Tons Kilograms Miles Gallons

Whats the difference between an atom and a molecule?

Which has more kinetic energy, a feather floating through the air or a rock on the ground?

The topmost zone near the shore of a lake or pond is the living are food for other creatures such as turtles, snakes, and ducks zone. The species A. Olimnetic B. Profundal C. littoral D. none of the above

In a food web, a bird eats plant-eating insects but also eats berries, where does the bird fit in the food web? a. both as a primary and secondary consumer b. as a primary consumer c. as a secondary consumer

In order to build the dipeptide, water was removed and smaller molecules were joined o make a larger molecule. What is the name of this chemical process?

Iodine solution is added to a cake solution. The color changes to purple. Based on this result, what biological molecules are present in the cake solution?