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3 years ago

Only humans can remove carbon from this carbon sink / reservoir.

2 answers:

7 0

The answer is D. Fossil fuels are a carbon reservoir that is only accessible to humans. Plants and animals are also carbon based but they are accessed by other plants and animals naturally. The atmosphere is a large carbon reservoir as well but it can be accessed by plants. Think how plants require carbon in the air to live. So the answer must be D.

FinnZ [79.3K]3 years ago

3 0

I think it was D. Hopefully I’m right

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What group is Pb (lead) in?

docker41 [41]

Answer:

Lead (Pb), a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table.

7 0

3 years ago

What is the velocity of a 485 kg elevator that has 5900 J of energy?

Ganezh [65]

The velocity of a 485 kg elevator that has 5900 J of energy is 108.6 m/s

<h3>What is the velocity of the elevator?</h3>

A moving elevator possesses kinetic energy due to its motion.

The velocity of the elevator is calculated from the formula of kinetic energy.

The kinetic energy formula is : Kinetic energy = ¹/₂mv₂

The velocity, v = √2KE/m

v = √(2 * 5900/485)

v = 108.6 m/s

In conclusion, the velocity of the elevator is calculated from the kinetic energy and mass of the elevator.

Learn more about velocity and kinetic energy at: brainly.com/question/25959744

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2 years ago

I'll give 50 pts and brainliest

e-lub [12.9K]

Answer:

Response is below

Explanation:

The different types of mining are underground, surface, placer, and in-situ. Underground mining uses various materials to excavate resources from beneath the surface of the Earth. Surface mining is a category of mining that in which soil and rock overlying the mineral deposit are removed. Placer mining is the mining of stream bed deposits for minerals. In-situ mining is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit.

3 0

3 years ago

Identifying Changes of Matter

Lapatulllka [165]

Boiling water, freezing matter and an exploding dynamite. Your welcome

4 0

3 years ago

Match these items. 1. moles per liter of solution solute 2. spreading out Keq 3. substance being dissolved diffusion 4. general

Degger [83]

Answer:

1. moles per liter of solution - Molarity

2. spreading out - diffusion

3. substance being dissolved- solute

4. general equilibrium constant - Keq

5. the substance doing the dissolving in a solution - solvent

6. solubility product constant - Ksp

Explanation:

Number of moles of substance being dissolved in one liter of solution is defined as molarity

Solute is the substance which is dissolved and solvent is the substance into which the solute is dissolved. For example salt is solute and water is solvent.

Ksp defines the solubility product constant which indicates the equilibrium between a solid and solution and the number of ions of solid required to achieve this equilibrium.

Keq depicts the scenario where reactant and product concentrations are constant in a chemical reaction.

Hence, the correct match is

1. moles per liter of solution - Molarity

2. spreading out - diffusion

3. substance being dissolved- solute

4. general equilibrium constant - Keq

5. the substance doing the dissolving in a solution - solvent

6. solubility product constant - Ksp

8 0

3 years ago