One problem with wind energy as a major source of electricity is that it is nonrenewable

the cost of land in populated areas

the major air pollution it can cause

that it does not work at night

Which of these describes two broad groups of interactions environmental scientists study? A How matter undergoes changes and how we interact with the animals we study B How we obtain food and how the Moon affects the earth C How humans come together

How is the frog skin different from human skin

Osmosis refers to what

Using the sun to light an inside Space is called

Which of the following must occur for speciation to happen?

Fossil A is found in a layer of rock that is lower than the layer that Fossil B is found in. Based on this information, which statement is correct? A) Fossil A is older than Fossil B. B) Fossil B is older than Fossil A.

Why are complex carbohydrates better for storing energy than simple sugars are?

Skeletal muscle contraction begins when calcium ions bind to

How does biotic and abiotic factores influence biome level

Approximately 40 of fatal highway crashes are alcohol-related. a. true b. false