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balandron [24]
2 years ago
12

What are fossil fuels?​

Biology
2 answers:
Rom4ik [11]2 years ago
7 0

okay \: it's \: your \: answer

A fuel (such as coal, oil, or natural gas) formed in the earth from plant or animal remains. It is called <u>Fossil</u><u> </u><u>fuels</u>.

Burka [1]2 years ago
3 0

Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels.

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Osmosis and tonicity
Sergio039 [100]

The blood cells likely placed in a "hypotonic solution".

<u>Option: A</u>

<u>Explanation:</u>

When human blood cells are immersed in a solution with a low concentration of solute than is present in cells, osmosis allows water to pass through the cells, allowing the cells to get swollen; such a fluid is hypotonic to the cells. But when held in a solution with a greater concentration of solute, osmosis allows water to pass out of the cell, the cell is smaller and crenated in form; then a solution is hypertonic to the cells.

Healthcare facilities preserve human blood cells in a plasma solution that has the proper salt and protein ratios. Such solution is formulated to be mildly hypertonic to the red cells, thus maintaining the integrity of the cells and avoiding hemolysis.

8 0
3 years ago
Two biologists co-discover a population of single-celled eukaryotes that do NOT have mitochondria. Whoa! One biologist thinks th
SVETLANKA909090 [29]

Answer: Option C

Explanation:

The amitochondriate eukaryotes may have genes that have been derived from purple alphaloproteobacteria because they do not have the mitochondria which is needed to optimize energy production in the presence of oxygen, can live and exist in a condition with little to no oxygen which is a characteristic of proteobacteria and hence are anaerobes obtaining energy by anaerobic respiration. They may have also undergone the endosymbiont theory but due to their environment which has little to no oxygen. They do not have a need for the mitochondria organelle and in the process lose this organelle.

7 0
3 years ago
The x-ray film shows a fracture where one side of the cortex is intact and flexed and the other side has signs of interruption (
zalisa [80]

Answer:

The correct answer is - option B.

Explanation:

Greenstick fractures are the type of fractures where one side of the cortex is intact and flexed while the other side is fractured. This type of fracture known as the incomplete fracture,

If any fracture have two or more lines of fracture it is called as Comminuted fractures. Impacted fractures have one segment on other. Due to the performing same activity again and again stress fracture occures that is characterized by failure of one cortical bone.

Thus, the correct answer is option B.

3 0
3 years ago
Tropical rainforests have thin, acidic soils, yet they contain dense vegetation and high biodiversity. how can these tropical fo
Mashcka [7]
<span>A large complement of decomposers rapidly turns dead plant and animal matter into nutrients that are quickly taken up by plants. Also, some animals live on eating plants, other animals eat those that live on plants, and animals that live on eating other animals die to make nutrients that are eaten by plants; this also, is called an ecological food chain.</span>
6 0
3 years ago
HELP??? How is convection in the mantle different from convection in the ocean?
Murrr4er [49]

Answer:

Ocean currents result from two processes - the action of wind on the surface of the water, and from variation in water temperature that causes movement- a process known as convection.Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. ... This subducted material sinks through the Earth's interior.

Explanation:

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3 years ago
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