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zzz [600]
3 years ago
8

What most likely caused the difference in the apparent size of the Moon in photographs A and B?

Biology
1 answer:
SashulF [63]3 years ago
8 0

Answer:

Option C

Explanation:

I think it is C distance changed

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Of the following choices, what is the approximate LD50 of the least toxic substance? 20 mg/kg, 70 mg/kg, or 130 mg/kg
pychu [463]

The approximate LD50 of the least toxic substance will be 130 mg/Kg.

  • The dose necessary to cause the death of 50% of a population under test after a predetermined test period is known as the LD50 value for a drug.
  • Commonly used as a broad indicator of a substance's acute toxicity are LD50 values.
  • Greater toxicity is indicated by a lower LD50. A low LD50 of 500 mg/kg or less implies severe toxicity.
  • Moderate toxicity is indicated by an LD50 of 500 to 1,000 mg/kg. A modest toxicity level of 1,000 to 2,000 mg/kg is indicated.
  • The species is especially vulnerable to the poison if the LD50 is low. The lethal dose (LD50) of a specific poison might change significantly between several animal species.
  • Thus out of all the options, LD50 130 mg/kg will have the lowest toxicity and 20 mg/kg will be the highest.

learn more about LD50 here: brainly.com/question/24845532

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8 0
2 years ago
The breakdown of chlorophyll reveals the _____ pigments of a leaf.
maks197457 [2]

the breakdown of chlorophyll reveals the carotenoid pigments of a leaf.

I hope this helps!

7 0
3 years ago
3. What tool do we use to write conclusions? Briefly<br> summarize it.
daser333 [38]

Answer: You use a restatement of the speech's thesis; a review of the main points discussed within the speech; and a concluding device that helps create a lasting image in audiences' minds.

Explanation:

4 0
3 years ago
How does dissolved oxygen levels in the water effects kelp?
Gre4nikov [31]

Answer:

As the temperature of the water goes up, the amount and spatial extent of the kelp goes down. These changes could result in dramatic habitat loss leading to reduced ecosystem productivity and the extinction of many invertebrate species.

Explanation:

Hope it helps :3

6 0
2 years ago
Human activities can disturb natural ecosystems which is a human activity that can change local ecosystems
Bad White [126]

Answer:

There are many way's we change local ecosystems one way is urbanization.

Explanation:

If the human race keeps building on more land ecosystems will die out and animals will become extinct.

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3 years ago
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