If plants produce oxygen as a result of photosynthesis why aren't oxygen levels continually increasing the atmosphere

Which of the following would demonstrate an attraction between magnetic poles? A. north pole to a north pole B. south pole to a south pole C. north pole to a south pole

Does our body has cells

Mrs. Rohaley gives you a piece of iron and asks you to determine the physical and chemical properties of the metal. She wants you to classify the properties as either physical or chemical:A.

True or False. Radio waves have longer wavelengths than X-rays.

A 100 g wire is held under a tension of 250 n with one

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?

1 A plane moving at 30m/s drops a load 200m down to the ground. How long did it take to hit the ground.

Can a body be in equilibrium if it is in motion? Explain

What is the average speed in kilometers per second of the earth around the sun?