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kykrilka [37]
3 years ago
9

Anyone know how to awnser the bottom portions?

Biology
1 answer:
Vedmedyk [2.9K]3 years ago
6 0
Hypothesis: If plants are placed in white light, then the will grow better than plants in other colours of light.

Independent variable: Colour of light.

Dependent variable: plant growth.

Control group: the plant in the closet.

Experimental group: the plant is the other light colours.

Constants: miracle grow and amount of water.

Measurements: height of plants.
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The circulatory system helps the excretory and digestive system do their jobs because the waste from the blood in the circulatory system is eliminated from the body through the excretory system, and the nutrients absorbed by the digestive system are transported through the blood.
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What is the most popular means by which bacteria obtain food.
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2 years ago
Sharps are medium-length needles with round eyes. <br> a. True <br> b. False
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TRUE, with also sharp points
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3 years ago
Match the given behaviors of water with their correct rationale. Use your observations about water and the reading you have done
kap26 [50]

Answer:

Heat energy first breaks hydrogen bonds before it increases movement of water molecules - High specific heat

As water freezes, the hydrogen bonds form a crystalline lattice which keeps the molecules at a consistent distance leading to a density lesser than liquid water- Ice floats on water

A large amount of energy is needed to convert liquid water, where the molecules are tied by hydrogen bonds, to water vapor, where they are not - High heat of vaporization

Hydrogen bonds between water molecules keep the molecules "sticking together." - Cohesion

Explanation:

Water is a molecule composed of two atoms of hydrogen and one atom of oxygen. Water is a very unique substance with properties that are unexpected of a molecule its size. Some of the unique properties of water include:

Its high polar nature, High-specific heat, High heat of vaporization, the lower density of ice. One of the reason for these unique properties is strong cohesive forces between water molecules.

Cohesion: Hydrogen bonds between water molecules keep the molecules "sticking together."

Polarity: Water molecules are polar, with partial positive charges on the hydrogens, a partial negative charge on the oxygen because oxygen is more electronegative than hydrogen. As a result, water is a good polar solvent.

High specific heat: Heat energy first breaks hydrogen bonds before it increases movement of water molecules.

Lower density of ice: As water freezes, the hydrogen bonds form a crystalline lattice which keeps the molecules at a consistent distance leading to a density lesser than liquid water, therefore, ice floats on water

High heat of vaporization: A large amount of energy is needed to convert liquid water, where the molecules are tied by hydrogen bonds, to water vapor, where they are not.

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3 years ago
What organisms are responsible for producing nitrogen compounds
Tems11 [23]

Answer:the legume family

Explanation:

5 0
3 years ago
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