The earth's crust is:

a solid mass of rock

made of different plates

thicker than the mantle

thinner under continents than under oceans

the water temperature off the shore of north america near the current by canada is much colder than the water off the coast of north america near mexico. use your knowledge of ocean currents to explain this observation

How can human activities affect the frequency and impact of natural disasters? << Read Less

The reproductive system of a male mammal provides (1) support for the internal development of the embryo (2) materials through the placenta (3) a means for the delivery of gametes (4) the ovaries for gamete production

At a synapse, adequate stimulation causes the presumptic cell to release which of the following

Which of these is NOT a job of the root of the plant? A. to hold the plant in place B. to make food C. to take in water and minerals from the soil

TRUE or FALSE. | Because Jupiter is more massive than Earth, a ball dropped there would take longer to hit the ground.

Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism's life process, and the rest is ...

6. What quantity can you calculate if you know that a car travels 30 kilometers in 20 minutes?

Muscle fatigue a. occurs when muscles are only partially able to contract. b. occurs when muscle cell glycogen is depleted. c. occurs when muscle cell ph increases. d. occurs due to decreased extracellula

Give one example of material resource and on example of energy source'