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FinnZ [79.3K]
3 years ago
8

What is the differencebetween selective and cross breeding ?​

Biology
1 answer:
Zinaida [17]3 years ago
3 0
SELECTIVE BREEDING INVOLVES CHOOSING PARENTS WITH PATICULAR CHARACTERISTICS TO BREED TOGETHER AND PRODUCE OFFSPRING WITH MORE DESIRABLE CHARACTERS . ... CROSS BREEDING INVOLVES TWO DIFFERENT BREEDS FROM THE SAME SPECIES TO CREATE A NEW BREED
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Which microscope is often used to view metal surfaces? scanning electron microscope scanning tunneling microscope transmission e
bija089 [108]

The correct answer is option (a) Scanning tunneling microscope.

Microscopes are used to see the objects at molecular level. Scanning tunneling microscope( STM) is a type of optical microscope that uses optics(light) and lenses to see the enlarged size of the object. This microscope use a small metal tip under a high voltage. when this tip of microscope is brought close to the metal, the metallic tip of microscope draws electrons from the atom (metal) to be observed. This generates an electric current. There is a computer system attached to the microscope that detects the change in the electric current. Computer plots the change in position of atoms in metal.







4 0
3 years ago
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Please help!! i will give brainliest!!
BaLLatris [955]

Answer:

D

Explanation:

it just is i  dont know y i just know it is D

3 0
2 years ago
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In "simple columnar epithelium," which word describes cell shape and which word describes the number of cell layers?
dolphi86 [110]

Answer:columnar describes cell shape.

Simple describe the number of layers

Explanation: epithelial tissues are one of the four major tissues of the body.the others being nervous, muscular, connective tissues.

Epithelial tissues are made up of thin cells that cover the external and internal surface of the body.

The cells may form one layer or more and they occur in several shapes.if they form one layer ,it is called simple.if they form several layers,it is called stratified.

Some are called pseudo-stratified because the cells occur with varying lengths and give the impression of stratified but they are actually made up of one layer.

Simple columnar epithelium is a single layer of tall, closely packed cells. They possess cellular extensions ,such as microvilli in the small intestine, or the cilia in the female reproductive tract.

3 0
3 years ago
Which is the one reason scientists produce transgenic organisms?
vitfil [10]

Answer:

its B

Explanation:

5 0
3 years ago
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What happens to the light coming out of a convex lens
katrin [286]
Rays of light that pass through the lens are brought closer together that’s because this lens is a converging lens.
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3 years ago
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