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antoniya [11.8K]
3 years ago
8

How would the removal of keystone species affect an ecosystem's biodiversity

Biology
1 answer:
klasskru [66]3 years ago
7 0
The keystone species is the one at the bottom of the pyramid, if we look at it like a pyramid. If the grass dies, then the deer cannot get food and die, and the predator cannot eat and dies, and the whole ecosystem can fall apart.
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If the objective lenses of a microscope can be changed without losing focus on the specimen, they are said to be ______. A) equi
aleksandr82 [10.1K]

Answer:

C) parfocal.

Explanation:

A microscope can be defined as an optical device that is typically used to make an enlarged (magnified) image of a minute (small) object and as such reveals all the little information about the object that cannot be seen by the natural human eye.

A microscope is said to be parfocal if its lense is binocular and they can both be in focus.

Hence, if the objective lenses of a microscope can be changed without losing focus on the specimen, they are said to be parfocal.

7 0
2 years ago
1. Identify the steps of cell division in a prokaryotic cell.
iris [78.8K]

Answer:

1. Step 1: DNA Replication. Just before the cell divides, its DNA is copied in a process called DNA replication. ...

Step 2: Chromosome Segregation. The two chromosomes segregate, or separate, and move to opposite ends (known as "poles") of the cell. ...

Step 3: Separation.

2. Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. These phases occur in strict sequential order, and cytokinesis - the process of dividing the cell contents to make two new cells - starts in anaphase or telophase. Stages of mitosis: prophase, metaphase, anaphase, telophase.

4 0
3 years ago
What is the force exerted on an object if it experiences 1000 Pa of pressure over an area of 25 m2? NO UNIT, NO COMMA, AND NO DE
rodikova [14]

Answer:

F = 25000 N

Explanation:

It is given that,

Pressure exerted by the object, P = 1000 Pa

Area of cross section, A = 25 m²

We need to find the force exerted on an object. The pressure exerted by an object is equal to the force acting per unit area. So,

P=\dfrac{F}{A}\\\\F=P\times A\\\\F=1000\ Pa\times 25\ m^2\\\\F=25000\ N

So, the force exerted on an object is 25000 N.

6 0
3 years ago
Why can a macroscopic amount of liquid that is contained change with the shape of the solid container holding it?
GaryK [48]

Answer:

C. Liquid molecules and atoms are able to slip around each other and fill in gaps between them.

Explanation:

The liquid is a state of matter that has no definite shape. In fact, it can adapt to the shape of its container. This is because of the reason that molecules in the liquid phase have high kinetic energy and weak binding forces. The high energy keeps them moving freely and thus can take the shape of it its container. On the other hand, in solids, the binding forces are stronger and molecules have very little energy to move freely.

Example: If we melt a solid, the molecules initially have less energy. However, when we heat them, they gain energy and start moving. Upon further heating, they will have enough energy to break the bondings and move around. This is why the solid structure will change to the liquid.

4 0
2 years ago
3. A cell is lacking in its supply of amino acids. Which of the following will occur?
dangina [55]
Is their and All Of The Above

Cuz it all happens
8 0
2 years ago
Read 2 more answers
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