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igor_vitrenko [27]

2 years ago

9

If there are five trophic levels, and at the bottom level (producers) 830,000 calories are available? How many calories are avai

lable to the top predator or top trophic level?

1 answer:

Mnenie [13.5K]2 years ago

6 0

Answer: fhybyuuuhuh

Explanation:

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Can someone help me on this question please? For brainliest

Serggg [28]

Answer:

1 and 4

Explanation:

Streams and small rivers flow together to create river systems. As the weather gets warmer, the snow and ice from the winter melts, which makes the water flow down the stream and into the larger river system. ... This can result in flooding due to more water draining in than being lost to evaporation.

8 0

3 years ago

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When a living organism dies, it stops taking in new carbon. Thus, as the radioactive carbon-14 decays, the ratio of carbon-12 to

Alexxandr [17]

Answer: The fossil is 11459 years old.

Explanation:

Half-life of carbon-14 = 5700 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{5700\text{years}}$

$k=1.21\times 10^{-4}\text{years}^{-1}$

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{years}^{-1}
t = age of sample = ?
a = let initial amount of the reactant = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process = 100 - 75 = 25 g Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}$

$t=11459years$

The fossil is 11459 years old.

4 0

2 years ago

LEADING STRAND OF DNA: TTAGGC WHAT IS THE mRNA strand?

Virty [35]

Answer:

DNA: 2 strands, Deoxyribose, Nucleus, A pairs with T

RNA: 1 strand, Ribose, Nucleus & Cytoplasm, A pairs with U

Explanation:

4 0

2 years ago

What happens during telophase II? Select three options.

RoseWind [281]

Answer:

the answers are c , d , and e

Explanation:

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In a ecosystem which of the following is a trait of living organisms

vlada-n [284]

Answer:

All of the living organisms have the ability to adapt.

Explanation:

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2 years ago