Homework Help for Science

What term describes the zone of contact metamorphism surrounding an intrusive magma body?

Explain how recycling practices can lead to environmental sustainability.

Which type of mining is likely the least harmful to the environment?
a. surface mining
b. placer mining
c. subsurface mining
d. none of the above

The energy for nearly every organism in nearly every ecosystem ultimately comes from _____.

a. minerals in the soil
b. the sun
c. heat from Earth
d. respiration
e. decomposition

In order for a hypothesis to be able to be used in science, which of the following must be TRUE?

a. It must be reproducible.
b. It must be proven correct.
c. It represents established facts.
d. It is testable and falsifiable.
e. It must be popularly accepted.

Why should you stock only brightly colored bandages for first aid supplies?

Most of the excessive carbon dioxide that is expected to cause global warming is generated b

At which lunar phase(s) are tides least pronounced (e.g., the lowest high tides)?

Which of the following is a long-term consequence of mining on the Earth?
a. erosion
b. an open-pit
c. sedimentation
d. all of the above

What are the main properties of liquids (in contrast to gases and solids)?

The defining characteristic of potable water is that it _______.
a. is used as tap water
b. can be used for washing and irrigation
c. can be used and consumed without risk
d. is delivered through pipes

Which of the following statements about the greenhouse effect is true?

A) Most life on Earth relies upon the hospitable temperatures resulting from the greenhouse effect.
B) The greenhouse effect is a dangerous phenomenon that should be stopped as soon as possible.
C) The greenhouse effect results from the presence of oxygen in the atmosphere.
D) Global warming is likely the result of a lessening of the greenhouse effect.

If you touch a downed power line covered or bare, What’s the likely outcome?

Which of the following uses a nonrenewable energy source?

(a) Wind turbine 

(b) Solar panel

(c) Power plant

(d) Hydropower dams