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vichka [17]
3 years ago
15

Which process occurs when a seed begins sending a root down into the soil and a stem above the ground?

Biology
2 answers:
Semmy [17]3 years ago
8 0
The answer is D (Germination)
Bezzdna [24]3 years ago
6 0
The answer would be D(Geotropism)
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Which of the following procedures removes small portions of one's cornea in order to help change the cornea's curvature and re-e
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Out of the options I would have to say Penetrating Keratoplasty, I am not sure
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You water three sunflower plant with salt water. Each plant receives a different concentration of salt solutions . A fourth rece
Lorico [155]

Answer:

Independent - Water/Type of water (salt and pure)

Dependent - Height of plant

Controlled - Amount of water

Explanation:

Independent is what the experimenter manipulates (in this case being the type of water.)

Dependent is what the experimenter measures and is a result of the independent (in this case being the height of plant)

Controlled is what you are trying to keep the same (in this case the amount of water you give each plant.)

6 0
3 years ago
Almost all coal used today was produced during the Carboniferous period from dead animals in the swamps.
Ann [662]

Answer:

False

Explanation:

Almost all coal that is used today has its origins in the Carboniferous period. The Carboniferous period was a warm and wet one, with the majority of the land being swampy and covered with dense rainforests of ancient tree species. By the end of this period, the climate quickly changed, resulting int he collapse of the rainforests. As the trees were dying out, they were falling in the swamps, quickly being covered by the mud, so remaining largely preserved. Over time they got exposed to higher pressure and temperatures as they were getting deeper into the crust, eventually resulting in the formation of the coal.

7 0
3 years ago
Visual acuity is greatest at the fovea of the eye. Please select the best answer from the choices provided T F
spayn [35]
The answer is actually true, because its a tiny spot in the center of the retina that contains only cones.
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3 years ago
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Can someone atleast tell me which line is which so I can color code please
Olegator [25]

Answer:

See attached image

Explanation:

Action potential can be split into 5 phases (0-4), where phase 4 leads from one action potential to the next. Phase 0 is the line up and is known as depolarization, it is here where the action potential is triggered and fast Na channels will open. Next, is phase 1 called early repolarization which is the little bit at the beginning of the plateau-here the Na channels will close. Then you have the plateau phase where Ca channels are open at the beginning and close at the end. Then is phase 3 called repolarization which is the big slope down and here is where the normal transmembrane ionic concentration gradients are restored. Finally, phase 4 which is the resting phase occurs. There are many resources online if you need more details, here is a pretty good one: http://www.pathophys.org/physiology-of-cardiac-conduction-and-contractility/

8 0
2 years ago
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