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Svetach [21]
3 years ago
11

PLEASE HELP 50 POINTS

Biology
1 answer:
goblinko [34]3 years ago
8 0
1.the universe is a never ending cycle of big bangs and big crunches.
2. A very, very fast expansion and acceperation …………..
3.the universe came from a very dense…………….
4.the universe has always been and continues to be the same.

I hope this helps
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Which product is the result of light reactants in photosythesis
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The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.

<u>What is the end product of light reaction in photosynthesis?</u>

The energy from sunlight is converted into a small amount of ATP and an energy carrier called NADPH. Together with carbon dioxide, these are used to make glucose (sugar) through a process called the Calvin Cycle. This is the things happening during light reaction of photosynthesis .

Hope this helps:)

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4 years ago
How many moles of F are there in 1 mole of CaF2? Explain clearly
Strike441 [17]

Answer:

2 moles of F

Explanation:

for every molecule of CaF2, without the two atoms of F, CaF2 cannot be formed.

Now we multiply both CaF2 and F by 6.02 X 10^23 to convert CaF2 and F to moles, it will be the same ratio since we multiplied both by the same number

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Study the agencies and policies above concerning environmental policies. You are part of a group of concerned citizens which is
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4 years ago
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It is believed that weed killers like 2,4-D and 2,4,5-T may
goldfiish [28.3K]

Herbicides are a broad category of pesticides that are used to get rid of undesirable plants like weeds and grasses that hinder the development and productivity of desired agricultural crops. Both 2,4-D and 2,4,5T are also known as 2,4-Dichlorophenoxyacetic acid and

  • Herbicides like 2,4-D and 2,4,5-T are also referred to as auxin-type herbicides or plant growth regulators. Auxins are hormones that affect cell division and elongation in order to control cell growth.
  • Auxins are required by plant cells in the proper concentration for growth and development. If auxin levels are too low, plant growth is not promoted at all, and if levels are too high, plant growth is excessively stimulated.
  • Most grasses are not killed by 2,4-D and 2,4,5 T, but broadleaf weeds are. It moves to the plant's meristems after being absorbed through the leaves.
  • These herbicides affect the tissues' cells, causing them to continually divide and proliferate. The plant finally dies as a result of this unchecked, unsustainable growth, which also causes stem curling and withering of the leaves.

Thus, by promoting cell division, these compounds act as herbicides.

Learn more about herbicides:

brainly.com/question/21807353

#SPJ9

8 0
1 year ago
Witch of the following is true of modern cell theory?
asambeis [7]

What's the options they gave you to chose from?

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4 years ago
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