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olga nikolaevna [1]
3 years ago
13

What is a cow that has not had children called

Biology
1 answer:
Ostrovityanka [42]3 years ago
6 0
A heifer

I dont know if this is a joke or not but the correct term is heifer
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100 POINTS! ! Hydrocarbons are not very soluble in water because
vesna_86 [32]

Answer:

covalent, which repel water molecules

they contain ions, which make the entire molecule hydrophilic

they are less dense than liquid water, so they float on the surface

most of their bonds are nonpolar covalent, so they are not attracted to water

Your answer

Explanation:

5 0
3 years ago
Your friends are worried because their newborn sleeps 16 or 17 hours a day. what would you tell them?
just olya [345]
It may be perfectly healthy that their newborn is sleeping this long so unless they start displaying other strange symptoms that cause concern, there is no need to worry. They could suggest that they are concerned to the midwife if they feel anxious, to get a professional opinion.
8 0
3 years ago
How amphibians regulate their body temperature?
Allushta [10]
Frog temperature. Frogs are ectotherms, this means they gettheir heat from external sources. They are sometimes called 'cold blooded', but in fact they do not have cold blood, it is justregulated by their environment. In comparison, humans are endotherms and can maintain their body temperature at about 37°C.
8 0
3 years ago
Read 2 more answers
Plant cells __________.
quester [9]

Answer: Option B) have mitochondria and chloroplasts.

Plant cells have mitochondria and chloroplasts.

Explanation:

Unlike animal cells, plants cells possess mitochondria and chloroplasts. Mitochondria serves as site for respiration giving off oxygen as by-product while chloroplasts are site of photosynthesis, where sugar molecules are formed from simple inorganic molecules like atmospheric carbon dioxide, water and sunlight trapped by chlorophyll.

4 0
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.

5 0
3 years ago
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