GEOGRAPHY HIGH SCHOOL

Igneous rocks are formed directly from ____________. a. solutions
b. chemicals and weathering
c. sand
d. magma and lava

Answers

Answer 1
Answer: Igneous rocks are formed directly from cooling and solidification of magma or lava.

In short, Your Answer would be Option D

Hope this helps!

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Most of Earth's dry air is made up of A. carbon dioxide and oxygen.
B. nitrogen and argon.
C. nitrogen and oxygen.
D. oxygen and argon.

Answers

the answer is, C. nitrogen and oxygen. 78℅ of nitrogen and about 21℅ of oxygen domain most of the dry air.

Answer:

It is B.

Explanation:

Hope this  helps you

Fossil fuels are considered nonrenewable resources because they a. burn so quickly.
c. take hundreds of millions of years to form.
b. are in such high demand.
d. pollute the air.

Answers

C, take hundreds of millions of years to form!

A narrow region between two air masses of different densities is a A. gulley.
B. ridge.
C. front.
D. system.

Answers

A weather front or front is anarrow region between two air masses of different densities. The answer isletter C. Because of the difference in density between warm and cold front, coldair tends to go underneath the warmer air. It often creates the strongest windsabove the ground surface. This is caused due to the heat and mass transfer betweenparticles of air. They can be slowed down by the presence of mountains andvalleys. Cold air moves fast and the temperature around it can be felt as ifyou are blown away due to its density. Whereas warm air moves slowly.
A narrow region between to air masses of different densities is a C. front.

What is the current in the circuit if R1=7 R 2 =15, and the voltage is 220 volts?

Answers

You haven't mentioned whether the resistors are in series or in parallel.
It's kind of important, and the answers are different.

If they're in series:
The total resistance is (R1 + R2) = (7 + 15) = 22 ohms
Current = (voltage) / (total resistance) = (220) / (22) = 10 Amperes

If they're in parallel:
The total resistance is (R1 · R2) / (R1 + R2) = (7 · 15) / (7 + 15) = 105/22 ohms
Current = voltage / total resistance = 220 · 22 / 105 = 46.1 Amperes.

The poor power supply could probably not deliver 46.1A for very long,
so I'm guessing that the resistors are in series, and the current is 10A.

What is molten material from earth's mantle that hardens to form rock?

Answers

The molten material from earth's mantle that hardens to form rock is called "LAVA".

The original body of a fossil is sometimes preserved in: A) ice
B) mud
C) water
D) sand
** please help lol​

Answers

Answer:

B

Explanation:

Hope this helps!
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