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3 years ago

What is plate motion?

Biology

1 answer:

nekit [7.7K]3 years ago

5 0

Answer:

motion of the seafloor away from spreading ridges

Explanation:

due to variations in topography (the ridge is a topographic high) and density changes in the crust.

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Match the following terms and definitions. 1. electrically charged atom or group of atoms formed by the loss or gain of electron

kobusy [5.1K]

Answer:

ionic bond:5

ion:1

chemical bond:2

valence:4

chemical reaction:3

Explanation:

7 0

3 years ago

If a Sequoia sempervirens tree is 100 m tall and a drawing of it is 100 mm tall, what is the magnification of the drawing?

Anuta_ua [19.1K]

I'm not in high school but I think it's ten or 100

6 0

3 years ago

Meselson and Stahl used density labeling of DNA to show that DNA replication occurs via a semiconservative mechanism. In their e

cricket20 [7]

Answer:

The organism previously used 15N for replication so all the DNA molecules were of 15N15N type. Then the organism is shifted to a medium where only 14N is available for replication.
According to semi conservative mode of replication, a newly synthesised DNA molecule consists of one new strand and one parental strand. So after the first round of replication, All the 15N strands will synthesise new DNA strands using 14N resulting into intermediate 15N14N DNA molecules. Hence, only one band would be observed (15N14N) above the original 15N15N band since 15N14N has lighter isotope too so it will be lighter than 15N15N molecules and will lie above it.
After second round of replication, 15N strand from 15N14N would synthesise another 14N strand. 14N strand from 15N14N molecules will also synthesise another 14N strand. So now, 50% of the DNA molecules will be of 15N14N intermediate type and 50% of them will be of 14N14N type.Two bands will be observed above the original 15N15N band. One band of 15N14N molecules will be right above it and other band of 14N14N molecules will be even higher because it is the lightest band since it has only the lighter isotope of nitrogen.

8 0

3 years ago

What kind of bonding occurs between carbon atoms, allowing carbon to form stable molecules?

brilliants [131]

Answer:

The correct answer is single,double and triple covalent bonds .

Explanation:

A carbon atom can form a single bond with another carbon atom example ethane.

A carbon atom can form a double bond with another carbon atom example ethylene

A carbon atom can form a triple bond with another carbon atom example acetylene.

But during the formation of Carbon carbon single bond or double bond or triple bond the valency of carbon atom that is 4 is always maintained.

5 0

3 years ago

Identify the object made from a nonrenewable resource

EleoNora [17]

Answer:

Plastic vase

Explanation:

3 0

3 years ago

Read 2 more answers