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3 years ago

What happens when a cycle res turns to its starting point

Biology

1 answer:

jarptica [38.1K]3 years ago

7 0

Explanation:

Now that we’ve learned how autotrophs like plants convert sunlight to sugars, let’s take a look at how all eukaryotes—which includes humans!—make use of those sugars.

In the process of photosynthesis, plants and other photosynthetic producers create glucose, which stores energy in its chemical bonds. Then, both plants and consumers, such as animals, undergo a series of metabolic pathways—collectively called cellular respiration. Cellular respiration extracts the energy from the bonds in glucose and converts it into a form that all living things can use.

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The phases of the moon are caused by

JulijaS [17]

The lunar phases are produced as a result of the change of the relative positions of the Earth, the Moon and the Sun.

The part of the lunar surface illuminated by the Sun that we can see from the Earth, is changing throughout a cycle that is repeated periodically every 29 days, 12 hours, 43 minutes and 12 seconds.

The answer is: B) Earth that revolving around the sun and the sun's light being reflected off the moon.

4 0

3 years ago

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What is the name for an organism’s genetic material?

IgorC [24]

It’s called the DNA

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3 years ago

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- Calculate the molar mass of a gas that has a density of 1.55g/L.

VLD [36.1K]

Answer: 39.86 g/mol

Explanation:

Assuming this gas is at a pressure of $0.99 atm$ and a temperature of $37 \°C+273.15=310.15 K$ , we can solve this problem with the Ideal Gas Law equation:

$P.V=n.R.T$ (1)

Where:

$P=0.99 atm$ is the pressure of the gas

$V$ is the volume of the gas

$n$ the number of moles of gas

$R=0.0821 \frac{atm.L}{mol.K}$ is the gas constant

$T=310.15 K$ is the absolute temperature of the gas in Kelvin

On the other hand, we know the density $\rho=1.55 g/L$ is given by a relation between the mass $m$ and the volume $V$ :

$\rho=\frac{m}{V}$ (2)

Then, the mass is:

$m=\rho V$ (3)

Another important fact here is that the molar mass $M_{mass}$ of an element is given by a relation between the mass of that element and the number of moles $n$ it contains:

$M_{mass}=\frac{m}{n}$ (4)

Isolating $n$ :

$n=\frac{m}{M_{mass}}$ (5)

Substituting (5) in (1):

$P.V=\frac{m}{M_{mass}}.R.T$ (6)

Substituting (3) in (6):

$P.V=\frac{\rho V}{M_{mass}}.R.T$ (7)

Isolating $M_{mass}$ :

$M_{mass}=\frac{\rho V}{PV}RT$ (8)

Simplifying:

$M_{mass}=\frac{\rho}{P}RT$ (9)

Solving with the given data:

$M_{mass}=\frac{1.55 g/L}{0.99 atm}(0.0821 \frac{atm.L}{mol.K})(310.15 K)$ (10)

Finally:

$M_{mass}=39.86 g/mol$ This is the molar mass of the gas

6 0

3 years ago

Why is there a trade-off between survivorship and fecundity?

love history [14]

Answer:

B. Resources such as time and energy are limited, so survivorship and fecundity cannot both be maximized simultaneously.

Explanation:

Each species trade-off between the survival and the life history traits such as a number of offspring produced, parental care and frequency of reproduction. Both reproductive success (fecundity) and survival success cannot be maximized due to limited resources.

For instance, species such as mosquitoes spend minimum energy is parental care but produce a large number of relatively unprotected young ones when the growth conditions become favorable to ensure the continuity of the species. They cannot spend much time in acquiring reproductive maturity and post natal care due to a small period of favorable growth conditions. On the other hand, most of the mammals such as human beings spend their energy in pre- and postnatal care to their young ones.

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4 years ago

if you found piophila casei and bone eating beetles on a body, what could you say about the time of death

IRINA_888 [86]

Well, both tend to feed on already decaying things, so I'd say that the body is at least 20 to 50 days after death. Beetles normally take over around that time because maggots can no longer get through the dry tissue.

7 0

4 years ago