All categories

3 years ago

How have mass extinctions helped scientists develop the geologic time scale

1 answer:

8 0

Scientists developed the time scale by studying rock layers and fossils world wide.
Radioactive dating helped determine the absolute divisions in the time scale. so mass extinction help because there is more to study

You might be interested in

What is meant by industrialization ?Write in brief

PtichkaEL [24]

Industrialization is the process by which an economy is transformed from a primarily agricultural one to one based on the manufacturing of goods. Individual manual labor is often replaced by mechanized mass production, and craftsmen are replaced by assembly lines.

8 0

2 years ago

The product of an object's mass, how high it is, and the acceleration of gravity of the planet it's on define which term

nalin [4]

Answer:

kinetic energy

Explanation:

5 0

3 years ago

Read 2 more answers

In the Florida map shown below, use the principle of superposition to determine which rocks are youngest? (2 points)

allsm [11]

The correct answer is A.

According to the principle of superposition the youngest rock formed lies at the upper layer and the oldest rock are found at the lowest of all the layers. The principle of superposition states that the layer of rock that is formed first lies at the bottom and the layer that is formed upper after that lies at the upper and is the newest layer of rock.

8 0

4 years ago

In foxes, silver-black coat color is governed by a recessive allele (b) and red color by its dominant allele (B), Determine the

MaRussiya [10]

Answer:

a. Genotype ratio= 1/2 BB: 1/2 Bb

Phenotype ratio= All red

b. Genotype ratio= 1/2 Bb: 1/2 bb

Phenotype ratio= 1/2 red: 1/2 silver black

c. Genotype ratio= All Bb

Phenotype ratio= All red

Explanation:

a. pure red x carrier red:

Genotype of parents: pure red (BB) x carrier red (Bb)

Genotype ratio of progeny= 1/2 BB: 1/2 Bb

Phenotype ratio of progeny= All red

b. carrier red x silver-black

Genotype of parents: carrier red (Bb) x silver-black (bb)

Genotype ratio of progeny= 1/2 Bb: 1/2 bb

Phenotype ratio of progeny= 1/2 red: 1/2 silver black

c. pure red x silver black

Genotype of parents: pure red (BB) x silver black (bb)

Genotype ratio of progeny= All Bb

Phenotype ratio of progeny= All red

4 0

3 years ago

What are the possible outcomes of the following cross

velikii [3]

the answer would be B.

8 0

3 years ago

Read 2 more answers