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slega [8]
3 years ago
11

Rachel Carson can be credited for _______. a. the modern environmental movement, slowing the extinction rate of hibernating mamm

als, and writing laws to protect the environment b. bringing attention to the unchecked use of pesticides, pesticides’ harmful effects on the environment, and writing laws to protect the environment c. bringing attention to pesticides’ harmful effects on the environment, the modern environmental movement, and slowing the extinction rate of hibernating mammals d. bringing attention to the unchecked use of pesticides, brining attention to pesticides’ harmful effects on the environment, and the modern environmental movement
Biology
1 answer:
hoa [83]3 years ago
8 0
The answer to this question is: B) B<span>ringing attention to the unchecked use of pesticides, pesticides’ harmful effects on the environment, and writing laws to protect the environment </span>
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not sure exactly what you're asking, but marine fish are evolved to live in salt water, and therefore cannot breathe properly in freshwater

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3 years ago
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Pls help!!<br><br><br> this is 7th grade science
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Answer:

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How has the artificial manipulation of plasmids been used for technological applications??
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4 years ago
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If the half-life of a radioactive atom is 3,500 years. How old is the substance if the parent-daughter ratio is 1:127?
balu736 [363]

Answer:

2.447 × 10⁴ years

Explanation:

Step 1: Given data

  • Half-life of the radioactive atom (t1/2): 3,500 years
  • Parent-daughter ratio ([A]/[A]₀): 1:127 (1/127)

Step 2: Calculate the rate constant

Radioactive decay follows first-order kinetics. We can calculate the rate constant (k) using the following equation.

k = ln2 / (t1/2) = ln2 / 3,500 y = 1.980 × 10⁻⁴ y⁻¹

Step 3: Calculate the time elapsed (t)

For first-order kinetics, we will use the following expression.

ln ([A]/[A]₀) = -k × t

t = ln ([A]/[A]₀)/ (-k)

t = ln (1/127) / (1.980 × 10⁻⁴ y⁻¹) = 2.447 × 10⁴ y

3 0
3 years ago
A reproduction of a cell for growth and division occurs in very specific stages and in a specific order. The cell in Figure 9 -
Virty [35]
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Do check if the answer’s correct, it’s been long since I’ve looked into the stages.
6 0
2 years ago
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