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sineoko [7]
2 years ago
15

Which of the following statements is true? Natural energy sources are nonrenewable and being depleted. Current fuels are not pol

luting the air. Mercury released into aquatic ecosystems comes from rock erosion. The natural cycles of Earth can clear up our current air and water pollution problems.
Biology
2 answers:
Dennis_Churaev [7]2 years ago
6 0
The first sentence is correct....
VikaD [51]2 years ago
6 0

Answer: Natural energy sources are non renewable and being depleted.

Explanation:

The natural energy sources like coal, petroleum, and natural gas are non renewable sources of energy which means they cannot be replenished after once used. As their demand is increasing their concentration in the environment decreasing.

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PLEASE HELP!!!<br> How do eukaryotic cells differ from each other?
vova2212 [387]

Eukaryotic cells differ from each other due to their structure and function. Though, two eukaryotic cells could differ in the number and types of organelles they contain.

8 0
3 years ago
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terry physics pushes a 75kg lab cart so that is accelerates from rest with a velocity of 4.4m/s in 3.1 secounds. what is the for
svetlana [45]

106.5N

Explanation:

Given parameters:

Mass of cart = 75kg

Velocity = 4.4m/s

time taken = 3.1s

Unknown:

Force = ?

Solution:

To solve this problem, we are going to apply newton's second law of motion. The law states that "the acceleration of a body is directly proportional to the force on the body and inversely proportional to the mass".

      F = m  x   a

F = force on body

m = mass of body

a = acceleration of the body

 But we know that acceleration is the change in velocity with time of a body;

     a  = \frac{change in velocity }{time}

  F = m x \frac{V}{t}

V is the velocity

t is the time taken

   F = \frac{75  x  4.4}{3.1}   = 106.5N

learn more:

Newton's law brainly.com/question/11411375

#learnwithBrainly

6 0
2 years ago
How are seatbelts related to inertia? Write you answer in complete sentences.
Svetllana [295]

Answer:

Inertia- the tendency of an object to resist a change in velocity

Explanation:

Say a car was going at 65 MPH, but suddenly stopped. For all of the people in that car, their bodies would keep moving forward at 65 MPH until stopped by an equal force (say, the thing right in front of each person) The seatbelt is there to protect you from your own inertia.

7 0
2 years ago
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A sailboat travels 35 km south in 5 hours. Which of the following statements describes the motion of the sallboat?​
Rudiy27

Answer:

7km/hr

Explanation:

6 0
3 years ago
One species called the naked mole-rat, has some unique differences. They have a social structure similar to that of ants and bee
Verizon [17]

Answer:

May be of the environment they live or genetics.

Explanation:

This naked mole rat species evolved back to an ectothermic life style rather than staying endothermic like all other mammals because of the environment they live or change in the genetic makeup. The main reason for this evolution may be the environmental they lives or through the change in genetic makeup of this naked mole rat species so both factors can contribute in the evolution.

8 0
3 years ago
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