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3 years ago

Explain how Darwin would have explained the many different variations of guppies.

Biology

1 answer:

ohaa [14]3 years ago

5 0

Answer : That trough time, a specie of animal, plant, bacteria can change.

When a life form reproduces, one of its"babies" may be different from its parents because of genetic mutation.

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Which part of a plant has the potential to produce a lateral shoot?

Dmitry [639]

The auxillary bud has the potential to produce a lateral shoot.

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3 years ago

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

3 years ago

What's the equation to population density

Allisa [31]

To calculate the population density, you will divide the population by the size of the area. Hope I helped!

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3 years ago

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What are two global issues associated with using fossil fuels for energy?(1 point)

astraxan [27]

Answer: b. fossil fuels are nonrenewable, so humans will run out of them eventually. burning fossil fuels also contributes to global climate change by releasing carbon dioxide into the atmosphere.

Explanation:

Fossil fuels are limited and we will run out of them eventually. They cannot be replenished in a single human's lifespan. Fossil fuels contribute to the destruction of ecosystems, but not only that. They release carbon dioxide into the atmosphere that warms the Earth. Therefore, anything other than B. would be incorrect.

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2 years ago

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What is the ploidy of organisms that have two sets of chromosomes? what is the ploidy of organisms that have two sets of chromos

Sidana [21]

The answer to this question is 2n

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4 years ago