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Setler [38]
3 years ago
13

Which of the following contaminants is radioactive?a. benzene b. plutonium c. mercury d. lead

Biology
2 answers:
s344n2d4d5 [400]3 years ago
7 0
Try going with B. plutonium
alexandr402 [8]3 years ago
7 0

Answer:

The correct answer is option b. "plutonium".

Explanation:

Plutonium is a chemical element with the symbol Pu and the atomic number 94. Plutonium is known for being a very dangerous radioactive contaminant for most of its isotopes. For instance, Plutonium-239, the isotope found in some fuels, is much more radioactive than Uranium-238.

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Turtles and leopards all have four limbs and an amnion. True The common ancestor of lamprey and lancelets had a vertebral column
kramer

Answer:

Explanation:

The objective is to conclude if the statements are true or false based on facts.

1)\text{ Turtles and leopards all have four limbs and an amnion.  } True

2) \text{The common ancestor of lamprey and lancelets had a vertebral column. } False

This is because their ancestor is a Chordate who doesn't have a vertebral column but a notochord.

3) True

\text{Frogs are the sister taxa of turtles and leopards because they are more }

\text{related to a common ancestor.}

4) \text{Leopards and bass are more closely related than turtles and bass}  False

This is because the bass is a fish that possess some characteristics traits related to an amphibian (turtle) as compared to a mammal(leopard).

5) \text{The taxon that shares the most recent common ancestor with frogs is the bass.} False

The taxa of turtles share a more common ancestor with frogs compared to bass.

6) \text{Leopards and lancelets have no common ancestor. } False

The common distant ancestor for leopards and lancelets is known as  Chordates

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All of the above u are welcom

6 0
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Put these events in the correct chronological order from earliest to latest
Tomtit [17]

The following events are provided;

A.The height of the civil rights struggle in the United States

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  • America civil war occurred in 1861
  • The height of the civil rights struggle in the United States was in the 1870s
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6 0
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Answer:

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Explanation:

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