Rock layers can be correlated to eachother using fossils. Please select the best answer from the choices provided T F

Biology

2 answers:

butalik [34]3 years ago

4 0

Um its true.........What can I say expect your welcome.......

denis23 [38]3 years ago

4 0

Answer:

TRUE

Explanation:

Fossils are defined as the remains of ancient flora and fauna that were deposited about millions of years back. These fossils are found to be embedded in the sedimentary type of rocks.

These fossils (fossil assemblages) plays a major role in the correlation of rocks. The rocks present in a different location, under favorable conditions, have preserved a good number of fossils.

The index fossils are most valuable because of their two main properties, such as their wide distribution in terms of geography and they appeared for a shorter period of time. These fossils are easily identified in the rock layers, and the presence of similar index fossils such as trilobite, ammonoids depicts that they must have deposited during the same time and the same type of rocks. This enables geologists to correlate the rocks of different places with the help of fossils/fossil assemblages.

Thus, the above statement is True.

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Consider the motion diagram. It illustrates a car's velocity (V) and acceleration (A). Determine is there is a change in either

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Answer:

Change in velocity: yes

Change in acceleration: no

Explanation:

The diagram of the problem is missing: find it in attachment.

In the diagram, there are represented:

- The velocity of the car, as a vector labelled with V

- The acceleration of the car, as a vector labelled with A

The directions of the vector represent the direction of the velocity and the acceleration, while the length of the arrows represent the magnitude of the two quantities.

We observe that:

- For the velocity, the direction is always to the right; however, the length of the arrow decreases, so the magnitude of the velocity keeps decreasing

- For the acceleration, the direction is always to the left; and the length of the arrow remains constant, therefore the magnitude of the acceleration does not change.

This means that the car is moving to the right, but it is slowing down, since the direction of the acceleration is opposite to the direction of the velocity.