Who can explain crop circles to me?

Which pair of molecules are both compounds? A. H2, CO2 B. H20, N2 C. CO2, H20 D. O2, C6H1206

Which uses water to remove smoke from burning coal

John wants to know if the color of the syrup (food) in a hummingbird feeder influences whether hummingbirds feed at the feeder. John set up his experiment this way: John selects 6 identical hummingbird feeders.

3 ways the field of medicine relies on photosynthesis

A good question to use for a scientific investigation should be testable, and it should be connected to science concepts. Casey wants to do a scientific investigation about light.

How would u know if you were looking at a rock that have undergone oxidation?

Almost all organisms on Earth use sugar for energy. Sugar reacts with oxygen in cells. Is burning sugar an exothermic or endothermic reaction?

What is the function of cilia

What is friction and what is its significance in the context of air particle movement?

Energy flow through an ecosystem is one-way because