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taurus [48]
3 years ago
5

All fossil fuels contain this element. A)Iron B)Hydrogen C)Copper D)Magnesium

Biology
2 answers:
kirill [66]3 years ago
6 0
I believe it is hydrogen :) 
den301095 [7]3 years ago
5 0
Im  sure its hydrogen 
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Is the answer computer because that can be used for both
4 0
1 year ago
_________ cells must be in osmotic equilibrium with their surrounding environments, because if they swell or shrink their membra
dlinn [17]
Well I'm not exactly certain where the teacher is going with this, but an often used example is red blood cells (RBCs) aka: erythrocytes.
RBCs are suspended in blood plasma as they flood through vessels around and around the body, so the osmolarity (amount of small particles that affect osmosis) must remain relatively constant. This is termed "isotonic", meaning the same amount of osmosis-influencing particles that are there inside the RBCs' cytosol, within their plasma membranes.
If the plasma osmolarity get too high, called hypertonic (as with extra salt particles) then water inside the RBCs will have an osmotic force driving it out of the cells' membranes, to flow where there are more salt particles. This will lead to cell shrinkage (called "crenation").
Counter to that, if the plasma osmolarity gets too low, as due to low plasma salt with excessive water intake (for example from the condition "water intoxication"), then the plasma will be hypotonic with respect to the intracellular cytosol concentration. This can result in water rushing into the RBCs' membranes via osmosis, causing the cells to swell from discs into spheres (balls), or even rupture and burst (a phenomenon called "hemolysis").

HOPE THOSE EXAMPLES HELP!!
3 0
3 years ago
Read 2 more answers
The water table is ________.
ladessa [460]

Answer:

is the surface where the water pressure head is equal to the atmospheric pressure

Explanation:

is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with water.

3 0
3 years ago
Name some of the traits mendel studied with his pea plants.
Scorpion4ik [409]
Gregor Mendel was an important scientist, considered to be the founder of the science of genetics. His experiments on the crossbreeding of plants and the passing down of favourable traits, led him to establish the laws of Mendelian inheritance. He was using pea plants for his experiments and he was studying seven different pea traits: pea shape and color, pod shape and color, flower color, plant size and position of flowers.

7 0
3 years ago
What is the core reason for many of today's environmental problems??
iVinArrow [24]
Some of the core reasons are:
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3) Unevenness of Garbage 
4) Increasing Population 
5) Expansion of Urban area

Hope this helps!
5 0
3 years ago
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