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3 years ago

Please help me I will give you the brain thing and extra points. image below part 1

Biology

2 answers:

denis23 [38]3 years ago

5 0

Answer:

C. Release of Heat Energy

Reason:

-A <u>chemical</u> is any substance that has a definite composition

-A <u>chemical reaction</u> is the process by which one or more substances change to produce one or more <u>different</u> substances

-Matter is anything that has mass and volume

-Solids have fixed volume and shape

-Liquids have fixed volume, but not a fixed shape

-Gasses have neither fixed volume or shape

Evidences of Chemical Change:

1. Evolution of bubbles (gas) without a heat source

2. Formation of a precipitation (solids floating in a liquid)

3. Transfer of energy (it gets hot or cold)

4. Color change

In the part of the question, "They noticed that bubbles form, the test tube got hot, and the magnesium disappeared", it states nowhere about color change or change in odor.

lesantik [10]3 years ago

4 0

Answer:

B. change in color.

Explanation:

you can tell theres a reaction if there is a change in color, temperature and a production of odor

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The oxygen level of a lake suddenly starts decreasing. A biologist believes that photosynthetic organisms in the community have

Semmy [17]

Answer:

Scientists with different educational backgrounds can come to different interpretations of the same data.

Choice A is correct

Explanation:

A biologist is a scientist with specialized knowledge in the field of biology while a geologist is a scientist who studies the matter that make up the Earth as well as the processes that shape them.

Both scientists came to different interpretations of the same data since they have different educational backgrounds.

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3 years ago

Assume that the kidney stone in question has reached the bladder. What is the pathway of exit for this stone (i.e. what anatomic

sasho [114]

Answer:

Here's what I get

Explanation:

From your bladder, the pathway of exit to the outside is through the urethra.

The diameter of the female urethra is about 6 mm. The male urethra is usually a bit larger.

Kidney stones can vary in size from 0.1 mm to over 40 mm in size.

Stones less than about 6 mm in size can usually pass through the urethra on their own with little or no pain.

Larger stones can be excruciatingly painful. The urethra cannot expand enough for them to pass through. Such stones usually need medical treatment to be removed.

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3 years ago

The influx of positive charges that makes the membrane potential more positive is?

Sunny_sXe [5.5K]

The influx of positive charges makes the membrane potential more positive and is known as depolarization.

<h3>What makes the membrane more positive charge ?</h3>

The membrane potential normally becomes more positive in response to neurotransmitters that open Na+ channels, more negatively in response to those that open K+ channels, and vice versa in response to neurotransmitters that inhibit these channels.

<h3>What does polarization mean?</h3>

The orientation dispersion of the electromagnetic waves that make up light beams is referred to as polarization. Unpolarized (uniformly mixed orientations), linearly polarized (fixed orientations), and circularly polarized are some of the different polarization states that light can take on (rotating field about the line of sight).

<h3>How membrane is affected by polarization and depolarization?</h3>

At a specific location on the neuron's membrane, hyperpolarization occurs when the membrane potential increases, and depolarization occurs when the membrane potential decreases (more positive).

To know more about polarization visit :

brainly.com/question/16106487

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2 years ago

What is the change that occurs when a substance changes from a gas to a liquid? Melting Boiling Evaporation Condensation

aev [14]

Changing from a gas to a liquid is called condensation. Evaporation is the opposite of this process, changing a liquid into a gas (example: boiling water turns into steam/water vapor). Melting and boiling describe temperatures or times during the process of a substance changing states.

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4 years ago

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a type of algae grows on a sloth. what must be true for the algae and the sloth to have a commensal relationship? a. the sloth m

Masteriza [31]

C commensalism occurs when an organism is neither benefitted nor harmed

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3 years ago

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