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Lostsunrise [7]
2 years ago
8

A star produces energy by:

Biology
2 answers:
pychu [463]2 years ago
7 0

Answer:

Option (C)

Explanation:

A star is an astronomical body that is located at a large distance from the earth. They appear to be shinning in the sky. The process of nuclear fusion takes place in the stars, where the nuclei of two smaller and lighter atoms are combined together in order to form a nucleus of heavier atoms. Here, the hydrogen atoms are combined to form a helium atom, and during this process of fusion, a significantly large amount of energy is released.

Thus, stars produce a large amount of energy by forming helium from the combination of hydrogen in its core.

Hence, the correct answer is option (C).

LenaWriter [7]2 years ago
5 0

Answer:C. Creating helium from hydrogen in its core

Explanation: Stars produce energy majorly by nuclear fusion. The process of creating helium by merging hydrogen atoms to produce deuterium which in turn is converted to helium.

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You are doing an experiment involving antibiotic resistance in your study bacteria. This organism grows well on LB - Miller agar
KiRa [710]

Answer:

See the answer below

Explanation:

The stock solution of Gentamycin has a concentration of 5 mg/ml while each plate needs to contain 50 micrograms/ml of Gentamycin.

5 mg/ml = 5000 micrograms/ml

There is a need to dilute the stock antibiotic solution in order to arrive at 50 micrograms/ml. Using the dilution principle;

m1v1 = m2v2

5000 x 1 = 50 x v2

v2 = 5000/50 = 1000 ml

<em>Hence, in order to prepare 50 micrograms/ml, 1 ml of the stock Gentamycin should be taken and diluted with 999 ml of distilled sterilized water. 1 ml of the diluted Gentamycin will then be added to each agar plate while they are still in the molten form at a warm temperature.</em>

8 0
3 years ago
Which two phenomena are evidence that gravitational forces are attractive? Select two statements.
Vinvika [58]

Answer:

A. the rise and fall of the tides.

C. a dropped object always falls toward Earth.

Explanation:

Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

Additionally, the gravity of earth makes it possible for all physical objects to possess weight.

The two phenomena which are evidence that gravitational forces are attractive includes;

I. The rise and fall of the tides: this is caused as a result of the gravitational force of attraction exerted by the moon on earth.

II. A dropped object always falls toward Earth: this acceleration is due to the gravitational force of attraction between the Earth and the object.

7 0
2 years ago
Thick fleshy stems will think waxy covering would most likely be useful adaptations for which of the following types of plants
dolphi86 [110]

Answer:

desert plants that need to conserve water like a cactus.

Explanation:

6 0
3 years ago
say yes or no to each life processes (in the pic) and determine whether or not THE SUN has the ability to act on these factors.
timofeeve [1]

Answer:

1 yes 2 no 3 no 4 yes

Explanation:

4 0
2 years ago
Do muscles grow before bones
mart [117]

Answer:

No, bones grow first to develop a frame for the muscle to grow on.

PXL

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