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3 years ago

What helps an earthworm dig through the soil and where is this located?

1 answer:

4 0

Prostomium sensory recepters in the "skin" and the underside of the earth worm has bristkes called setea to help it move

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Yeast cells are recovered from a fermentation broth by using a tubular centrifuge. Sixty percent of the cells are recovered at a

Serga [27]

Answer:

$\\ \omega = 5033.22 \ rpm$

Explanation:

Given that:

$R_1 = 0.6\\\\R_2 = 0.95\\\\\omega_1 = 4000 \ rpm\\\\\omega_2 = ???\\\\Q_1 = 12\ l/min\\\\Q_2 = 12\ l/min$

For a continuous centrifuge ; solid recovery R ∝ $\frac{\omega^2}{Q}$

where;

ω = angular velocity of the centrifuge in rpm

Q = flow rate

SO;

$R_1 \alpha \frac{4000^2}{12}$

$R_2 \alpha \frac{\omega^2}{12}$

$\frac{R_1}{R_2} = \frac{4000^2}{12}$ ÷ $\frac{\omega^2 }{12}$

$\frac{R_1}{R_2} = \frac{4000^2}{12} * \frac{12}{\omega^2}$

$\frac{R_1}{R_2} = \frac{4000^2}{\omega^2}\\\\\frac{0.6}{0.95} = \frac{4000^2}{\omega^2}$

${\omega^2} = \frac{4000^2*0.95}{0.6}\\\\\\{\omega} = \sqrt{ \frac{4000^2*0.95}{0.6}}\\\\\\ \omega = 5033.22 \ rpm$

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3 years ago

TRUE OR FALSE? Mineral ores provide us with all the raw materials to make virtually everything, from toothpaste to CD players an

Aneli [31]

Answer:

True!

Explanation:

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3 years ago

Read 2 more answers

The correct way to calculate population size is by dividing the total population by the land area.

Lyrx [107]

The statement "The correct way to calculate population size is by dividing the total population by the land area." is true. The correct option is A.

<h3>What is the population?</h3>

The entire number of species in a given area makes up the population. Surveys of various places are conducted to determine the population. By dividing the total population by the fraction of each individual, the population size can be determined.

There are various techniques for population counting. Cohort analysis, aerial counts, etc., are some of these techniques.

Thus, the statement is true. The correct option is A.

To learn more about population size, refer to the link:

brainly.com/question/23433122

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2 years ago

You are working on research involving competition between animals. Which of the following resources do you not need to measure?

Alja [10]

The resource that you do not need to measure for research involving competition between animals is Light . The correct option is A

<h3>What is light availability?</h3>

The presence or amount of light in a specific setting is referred to as light availability. The amount and type of light that is available for organisms to perceive and use for a variety of biological processes are referred to as available light.

Although diurnal/nocturnal activity patterns and other characteristics of an animal's behavior or physiology might be influenced by light availability, light is not often thought of as a resource that animals directly compete for.

Learn more about light availability here : brainly.com/question/29886993

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1 year ago

Describe one way to correlate similar rock layers

Verdich [7]

These fossils are very useful for us because we can use them to date the layers of rock that they are found in. Fossils that can be used in this way are called index fossils, and rock layers with the same index fossils in them can be correlated. Not my answer, link here for full

http://peter-mulroy.squarespace.com/correlating-rock-layers/

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3 years ago