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Gemiola [76]
3 years ago
9

Why does frozen water (ice) float on liquid water

Biology
2 answers:
Natali5045456 [20]3 years ago
8 0

Answer:

Because it is a solid that has trapped air with the water molecules in cold temperature thus creating a hard solid.

sergeinik [125]3 years ago
5 0

Explanation:

Because Ice has comparatively less density than water. So, it floats on liquid water.

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What are DRIs and why are they preferred? Why are they not on food labels?
Pie

DRIs is the general term for a set of reference values or guidelines that are used to plan and asses nutrient intakes of healthy people. These values which vary by age and gender include: 

- Recommended Dietary allowance (RDA): average daily level of intake sufficient to meet nutrient requirements of about 97 - 98% of healthy people.

-Adequate intake (AI): established when evidence is not sufficient to develop an RDA and is set at a level assumed to ensure nutritional adequacy.

- Tolerable Upper Intake (UL): Maximum daily intake unlikely to cause adverse health  effects.

DRIs are not necessarily found on labels because there is no law requiring that they must be placed there.

5 0
3 years ago
Fluorine (F) has seven electrons in its outter most shell. Flouride ?
Ainat [17]

Answer:

Fluoride theoretically should have 8

Explanation:

Fluoride is the Fluorine ion, meaning electrons are added or substracted from Fluorine to form Fluoride. Usually, an ion has a full outer shell.

6 0
3 years ago
Hi everyone
professor190 [17]

Amino acids are acids on one hand, and a base on the other hand.

<h3>What is an acid?</h3>

An acid is a substance that produces hydrogen or hydroxonium ions as the only positively charged ion when it ionizes.

All amino acids have an amine group -NH_2 and a carboxylic group -COOH.

The carboxylic group ionizes such that:

COOH -- > COO^- + H^+

The presence of the amine group enables amino acids to also act as a base.

More on amino acids can be found here: brainly.com/question/14583479

#SPJ1

8 0
2 years ago
A hormone attaches to a target cell at a receptor protein. What do you know about this hormone?
charle [14.2K]
So, this hormone is a non-steroid hormone.  Steroid hormones are fat soluble and can pass directly into the cell to affect the nucleus.

Non-steroid hormones bind to the receptor and trigger a chemical change within the cell without ever entering the cell, or the nucleus.

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3 years ago
Which statement best describes the process by which the millions of body cells that form a housefly can all contain the same gen
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DNA replication?
Mitosis?
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3 years ago
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