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Diano4ka-milaya [45]
3 years ago
7

Ecosystems change when _______.

Biology
2 answers:
LUCKY_DIMON [66]3 years ago
8 0
D. All of the above
elena55 [62]3 years ago
6 0
Answer - D. All of the above

Reasoning -

Living components in an ecosystem such as a predator that was there first and is not there to maintain the food chains then it can disrupt the way of ecosystem.

Non-
living can have an affect such as if you take water away in ponds and lake around the area. Things will likely will die such as plants and casual animals who use the parts of area.

Their Stability of course like a natural disaster which can cause the impact and infliction on the ecosystem itself.

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Aquatic ecosystems are governed by factors such as amount of oxygen, amount of light, and water movement.
34kurt
False

<span>Marine ecosystems like lakes and oceans have aphotic zones. Aphotic zones refer to the zones in the water where there is little or no sunlight. It is found in bodies of water were depths only receive less than 1% of sunlight penetrations. Bioluminescence is essentially the only light found in this zone and most food comes from dead organisms that sink at the bottom of lakes or oceans. </span>
8 0
3 years ago
What is the difference between Mechanical and Chemical Weathering?
Mamont248 [21]
Carbon dioxide, oxygen, water, and acids may all cause chemical weathering. Mechanical weathering is the process of breaking a large rock into smaller pieces without changing the minerals in the rock. Mechanical weathering may be caused by frost, ice, plant roots, running water, or heat from the sun.
8 0
3 years ago
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In order for a dam to work, ______ must be present.
VikaD [51]
c . i looked it up l o l
4 0
3 years ago
Zinc 419.53 oC 7.134 Nickel 1455oC 8.912 Copper 1084.62oC 8.96 Silver 961.78oC 10.501 Gold 1064.18oC 19.282 A cube of each metal
const2013 [10]
The data given are 
            melting point            density 
<span>Zinc        419.53 oC              7.134
Nickel      1455oC                 8.912
Copper  1084.62oC              8.96
Silver        961.78oC           10.501
Gold        1064.18oC          19.282

density is the mass per unit volume. Melting point is determined by the intermolecular forces between particles in the solids.
We </span>have been asked to find which cube weighs the most 
density = mass/volume 
when volume is constant for all the metals, then density is directly proportional to mass. Therefore metal with highest density has the highest mass.
from the given metals, metal with highest density is Gold.
correct answer is Gold.
6 0
3 years ago
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Describe the actual and relative sizes of a virus, a bacterium, and a plant or animal cell.
anzhelika [568]

Answer :

The animals are categorized into 2 groups - eukaryotes and prokaryotes. The microbes like bacteria are coming under prokaryotes. They are unicellular organisms and without a true nucleus.

Viruses are the connecting link between the living and non - living. They are smaller than bacteria. The microbes less than 100 micrometer can't be seen by the naked eye. They can only visible under a microscope.

Viruses like polio, flu virus sizes are 10nm. But some of the viruses are also less than 10nm. The size of bacteria is 1 micrometer. The viruses are 10 times smaller than the bacteria.

The eukaryotic organisms are more advanced and multicellular. Their cell size is larger than bacteria and viruses. The red blood cells under the light microscope are 8 micrometers. The typical animal cells like sperm are 60 micrometers and a skin cell is 30 micrometers. The plant cell for example pollen is 90 micrometers.

The eukaryotic cells sizes are more than prokaryotes like bacteria.

3 0
3 years ago
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