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uranmaximum [27]
3 years ago
8

What is the most likely consequence of open pit mining on plant life? a. a dramatic reduction in the variety of plant species b.

an increase in the number of plant species c. the complete loss of plant life in the area occupied by the surface mine d. a temporary decrease in plant populations
Biology
2 answers:
bonufazy [111]3 years ago
7 0
C) The complete loss of plant life in the area occupied by the surface mine.

Hope this helped!
DaniilM [7]3 years ago
4 0

Answer: c. the complete loss of plant life in the area occupied by the surface mine.

Open pit mining is a mining process that involves mining of earth surface, instead of underground layers. It is also, known as strip mining. It is done to extract ore and fossil fuels from the surface of earth. An open pit mining removes the subsurface soil along with vegetation growing on that surface.The mining site exhibits the mining pits, the soil in these pits changes constantly due to erosion. The soil looses it's fertility. This converts the mining site into a barren land.

Therefore, the complete loss of plant life in the area occupied by the surface mine is the most likely consequences of open pit mining on plant life.

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the 6th mass extinction started around 10,000 years ago, and is still happening today. Who/what do you think is the greatest cau
soldi70 [24.7K]

<u>Human activity</u>. The sixth mass extinction of of organisms caused by human actions potentially could go as far back as the late Pleistocene era (over 12,000 years ago.)

4 0
3 years ago
Cell division is preceded by two growth phases. Besides growth, both G1 and G2
Leviafan [203]

Answer:

A

Explanation:

a. contain checkpoints that determine if the cycle will continue.

b. help move chromosomes to the new daughter cells.

c. produce more chromosomes before the cell divides.

d. grow and produce enough cytoplasm to fill two cells.

<em />

<em>The correct answer would be that G1 and G2 contain checkpoints that determine if the cycle will continue or otherwise.</em>

The cell cycle generally has three checkpoints that happen at G1, G2, and M phase of the cycle.

At G1 checkpoint, the integrity of the DNA of the cell is assessed to ensure that there are no damages and other conditions such as size and energy reserve are checked.

At G2 checkpoint, the cell is assessed for proper chromosome duplication to ensure that there are no mistakes or damages. The size of the cell and the amount of protein are also checked to ensure that the cell is ready for the active division phase.

At M checkpoint, correct attachment of the spindle fiber to the kinetochore of the chromosomes is checked. This checkpoint is also known as the spindle checkpoint and it happens towards the concluding phase of the metaphase stage.

<u>The correct option is therefore, A.</u>

6 0
3 years ago
______________ are specialized plant epidermal cells that lie on either side of stomata. These cells regulate the opening and cl
Marizza181 [45]
Answer: C) Guard cells

4 0
3 years ago
Read 2 more answers
С Е
Anon25 [30]

Answer:

Crossing over

Explanation:

During prophase I of meiosis, homologous chromosomes pair to form bivalents. The chromatids of bivalents may form intimate contact points called chiasmata. At the chiasmata breakage may occur and exchange of chromatids segments between non sister chromatids may take place. This is crossing over ad results in new gene combinations causing variations.

3 0
3 years ago
Which is an environmental factor that affects skin color in humans? amount of food consumed amount of sunlight absorbed number o
Zepler [3.9K]

Answer: Amount of sunlight absorbed

Explanation:

The amount of sunlight absorbed by the body affect the color of the individual. Rest all the factors that affects the color of the individual are genetic factors.

The person who absorbs more sunlight will have more melanin concentration or amount in their cells as as compared to the person who absorbs less sunlight.

Hence, the correct answer is option sunlight absorbed.

7 0
3 years ago
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