Why does ice become less dense than water?

1 answer:

8 0

Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.

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Match each term with the appropriate definition.

zalisa [80]

Answer:

Food web --> a model that shows interconnected food chains in an ecosystem

Predator --> an organism that kills another for food

Prey --> an organism that is killed and eaten by another

Ecosystem --> all of the living and nonliving things that interact in a particular area

4 0

4 years ago

Which of the following describe a stem cell? Select three options.

Thepotemich [5.8K]

Answer:

The correct answer is -

a cell that is able to develop into a variety of specialized cells

a specialized cell that results in differentiation

a specialized cell that results in self-renewal

Explanation:

Stem cells are the primal cells that have the ability to self-renewal and able to differentiate into more specialized cells through the mitotic cell division. Stem cells are pluripotent generally but can be totipotent and multipotent as well.

These cells show self-renewal and unlimited potency properties. Self-renewal is the ability of the cell that allows it to go through various cell cycles without losing its undifferentiated state.

7 0

4 years ago

Suppose that a geneticist discovers a new restriction enzyme in the bacterium Aeromonas ranidae. This restriction enzyme is the

tankabanditka [31]

Answer:

The name of the restriction enzyme would be <em><u>ara1</u></em>.

Explanation:

Restriction enzymes can be described as enzymes which are responsible for cutting DNA from specific sites. Restriction enzymes are present naturally in bacterias and can be produced artificially as well.

The name of a restriction enzyme is made by deriving it from its genus, species and strain. For example, Aeromonas is the genus name, ranidae is the species name and as it is the first to be isolated so the strain would be 1. Hence, the name ara1 will be given to this enzyme.

8 0

4 years ago

Referring to the above diagram, how high will the ball rise on the right-hand incline?

KatRina [158]

I don't know if you know but there is no diagram

7 0

3 years ago

Read 2 more answers

What are examples of pesticide

musickatia [10]

There are 6 common types of pesticide that are recognized and seen quite often:

1. Insecticides which are mainly used to kill insects, ticks, and mites.
2. Herbicides which are mainly used to kill weeds.
3. Fungicides which are mainly used to kill mildew and other fungi.
4. Rodenticides which are mainly used to kill mice, rats, and other rodents.
5. Disinfectants which are mainly used to kill bacteria and mold.
6. Wood Preservatives which mainly protects wood from fungus and insects invading it's system.

There are different types of families for pesticide as well at a much deeper level.

7 0

3 years ago