What would be the effect of loss of biodiversity in an ecosytem

What are the nonmetals in Group 16 of the periodic table

How can hypotheses best be tested?

There is a special "imaginary line" that astronomers like to draw between Mars and Jupiter (not the asteroids). What is that line, and how might it explain why terrestrial planets are much less massive than Jovian planets?

Based on discoveries to date, which of the following conclusions is justified? a) Most stars have one or more terrestrial planets orbiting within their habitable zones. b) Planets are common, but planets as small as Earth are extremely rare.

Newtons second law says that force is equal to

A new cannon was being developed in a science lab. The instructor wanted to do some testing of the cannon's ability to launch objects with different masses. The instructor used tennis balls and filled them with lead, rocks, and styrofoam.

Which law is being demonstrated when a swimmer moves forward through the water?

A camcorder has a power rating of 16 watts. If the output voltage from its battery is 7 volts, what current does it use?

Electromagnetic waves with low frequencies have been used for long-distance underwater communication. These waves most likely belong to which of the following parts of the electromagnetic spectrum? A. gamma rays B. infrared waves C. radio waves D.

A bird sitting high in a tree is an example of an object with what type of energy