1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kay [80]
2 years ago
9

What happens to chromosomes in prophase of mitosis?

Biology
1 answer:
OLga [1]2 years ago
7 0

Answer:

C

Explanation:

they shorten and become visible in biology.

You might be interested in
What is the impact of developing and using rock, mineral, and energy resources on earth's living and non living systems
77julia77 [94]

Answer:  The use of rock, mining and energy production contaminates the environment by affecting the abiotic land mass. And therefore, by contaminating the habitat, the living beings that live there are harmed.

Explanation:

<u>Mineral and rock extraction, transport and processing comprise actions that produce environmental impacts because it produces a certain disturbance to the surface and underlying strata, as well as to aquifers</u>. These impacts can be short-lived, lasting as long as the mine is operational, or they can persist after mine development has been completed.

Major impacts include:

  • Contamination of soil, vegetation, drainages, rivers and groundwater aquifers contamination from leaking tailing piles and slurry ponds. If not properly treated, effluent from surface or subway mine water disposal can be highly acidic, and will contaminate surface waters and shallow groundwater with heavy metals, nitrates or oil from equipment, reducing local water supplies. During surface mining, movement and stockpiling of overburden, constructions or covering of soils alter rivers, drainages and coastal areas.
  • Surface disturbance caused by access roads, pits, and site preparation.
  • Noise and emissions from the operation of equipment.
  • Air pollution, atmospheric dust from traffic, excavation, drilling and site clearing. Atmospheric particulates come from blasting, excavation and earth moving, transportation or any operations that occur on the surface of subway mines.
  • Removal of rock strata can disrupt the continuity of the local aquifer, and cause interconnections and contamination between groundwater.

<u>Both surface and subway mining include a drainage of the mine area and discharge of mine water, the removal and storage/disposal of large volumes of waste and the transfer and processing of minerals or construction materials.</u> This requires the use of diesel or electric mining and haulage equipment. Transportation of ore within the mine area and to processing facilities may use trucks, conveyors, rail, polyduct or conveyor belt which are vehicles that emit large amounts of carbon dioxide.

Processing plants may be located in mountainous regions and so may have difficulty disposing of production wastes and other pollutants. <u>They may then end up disposing of them in rivers or coastal waters.</u>

The land at the surface of the mines will be unstable, there will be fracturing and subsidence, it will modificate soils, vegetation, rivers, wildlife habitat, wetlands, causing a temporary or permanent loss of land productivity, and <u>contamination of soils due to mineral materials and toxic substances</u>.

<u>Also, the production and use of energy is the main cause, together with transportation, of greenhouse gas emissions, the gases responsible for climate change</u>. Consequences of climate change are increased temperatures, rising sea levels and reduced rainfall.

The current model of generation, transport and consumption, <u>absolutely dependent on fossil fuels, is unsustainable</u>. The chemical products emitted, mainly from coal and oil-derived thermal power plants, are transported by the wind and deposited by rainfall thousands of kilometers away from their origin, causing "acid rain", which is <u>the cause of the deterioration and destruction of forests, lakes and other ecosystems</u>. Another example are the N<u>uclear power plants which produce high-level radioactive wast</u>e (long-lived, highly radioactive), which poses a constant threat to the environment due to the current inability to manage it.

Thus, the use of rock, mining and energy production contaminates the environment by affecting the abiotic land mass. And therefore, by contaminating the habitat, the living beings that live there are harmed.

6 0
3 years ago
Individual cells are usually very small because...?
Rama09 [41]
Because the people that mae them wanted them to be very small

4 0
3 years ago
Read 2 more answers
PLEASE HELP<br><br> Complete the Concept Definition Map for ATP
Elden [556K]

Answer:

Why are you talking help in french wow u bad

Explanation:

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

Why are you talking help in french wow u bad

4 0
2 years ago
A sample of gold (AU) has a mass of 57.01 g.
Kamila [148]

A). Calculation: Given mass of Au * 1mol of Au/molar mass of Au= # of moles ;

57.01 g Au*1 mole of Au/196.97g Au=0.3 moles of Au.  So the answer is 0.3 moles of gold(Au). Good luck on the rest,  and message me on Brainly if you need more help. I'll be happy to.


6 0
3 years ago
Read 2 more answers
A red blood cell placed in a medium that is hypertonic relative to its cytoplasm will _____. Multiple Choice expand and burst sh
TEA [102]

Answer: shrink

A red blood cell placed in a medium that is hypertonic relative to its cytoplasm will shrink

Explanation:

Since the hypertonic medium has a higher concentration than the red blood cell, water will move out of the cell membrane of the red blood cell into the hypertonic medium.

Thus, after a while the continuous loss of water will cause the red blood cell to shrink (reduce in size)

4 0
3 years ago
Other questions:
  • How many types of atoms make up the structure of a single element
    15·2 answers
  • Debbie was doing a science lab, and she was instructed to decide whether a piece of plastic would float or sink without actually
    13·2 answers
  • Gene flow is one force that can cause evolutionary change. Which example best illustrates gene flow?
    10·1 answer
  • What type of relationship MOST LIKELY exists between the birds and the elephant?
    8·1 answer
  • A chemical bond formed by transfer of electrons
    6·1 answer
  • A microbiologist wants to study the virus particles from a urine sample, but not any bacteria that might be present. How can the
    9·1 answer
  • How do human activities *affect the rate* that organisms become extinct
    7·1 answer
  • Help asap
    6·1 answer
  • What did Elijah Muhammad overcome?
    7·2 answers
  • _______ occurs when the causative virus, which is strongly teratogenic, is transmitted to the fetus in utero; it can subsequentl
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!