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3 years ago

Tell if you agree or disagree with the statements below and explain your answers:

Biology

1 answer:

Vladimir79 [104]3 years ago

5 0

Answer: the last ones wrong because to have lots of biodiversity you need different types of plants or organisms

A tundra has little to no trees

The habitat one is correct

Explanation:

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How do you fit into a food web ? Describe a food web that includes you ?

sleet_krkn [62]

Answer:

We would be considered as one of the top predators.

Explanation:

There aren't many threats to humans at this point. We're omnivores, so we consume plants and meat. Humans are usually tertiary consumers, on the third trophic level, but sometimes can be on the second trophic level depending on the diagram.

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3 years ago

What function does the nose serve in the respiratory system?

Vesna [10]

It is to notice the sense of smell

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3 years ago

Read 2 more answers

Which of the following is equivalent

Alja [10]

Answer:

i think b is right

Explanation:

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3 years ago

Strontium-90 has a half life of 29 years, how much strontium-90 is left from the Chicago pile reactor that was active around 87

agasfer [191]

Answer:

The answer is below

Explanation:

The half life of a substance is the time required by that substance to reduce to half of its initial value. The half life is calculated using the formula:

$N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\where\ N(t)=quantity\ of\ substance \ remaining, N_o=initial\ quantity\\of\ substance, t=time\ and \ t_\frac{1}{2}=half\ life\ of\ substance$

Given that t = 87 years, half life = 29 years, therefore the quantity of strontium-90 left is:

$N(t)=N_o(\frac{1}{2} )^\frac{87}{29} \\\\N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\N(t)=N_o(\frac{1}{2} )^3\\\\N(t)=\frac{1}{8} N_o$

That is one-eight of Strontium 90 would be left after 87 years

6 0

3 years ago

Which of the following is NOT an example of a plant adaptation towards success in

Ket [755]

Answer:

i think its A but dont take my word for it

Explanation:

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2 years ago