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kogti [31]
3 years ago
13

Explain how geologists use fossils to determine the relative ages of rock layers within a large region

Biology
2 answers:
Katyanochek1 [597]3 years ago
6 0
Relative dating to determine the age of rocks and fossils. Geologists have established a set of principles that can be applied to sedimentary and volcanicrocks that are exposed at the Earth's surface to determine the relative agesof geological events preserved in therock record.
Hoochie [10]3 years ago
5 0

Answer:

Geologists use Relative Dating to determine the age of rocks through the use of fossils.

Explanation:

Relative dating relies on the study of fossils and strata to stimulate rock age. However, only fossils that are distributed in short time intervals in the history of the earth, having a wide geographical distribution, allow this dating. These fossils are called old fossils. The method of relative dating is based not only on the information provided by the fossils but also on two other fundamental principles: the principle of initial horizontality, whereby, if there is no disturbance, sedimentation takes place regularly, forming layers generally parallel and horizontal strata, and the principle of strata overlap, according to which each stratum is older than the one that covers it.

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6 0
3 years ago
Which of the following lists the parts of a reflex are in the corret order?
Murrr4er [49]

Answer:

A) receptor, sensory neuron, interneuron, motor neuron, effector

Explanation:

In a reflex arc, the receptors present in the skin receive stimulus and generate afferent impulse. The sensory neuron transmits the impulse to the interneuron. Interneuron is present in the spinal cord and activates it. The interneuron then sends back the impulse through the motor neurons to effectors whcih are present in the muscles for the response.

6 0
3 years ago
Two birds eating same food and nesting in same area are called what
adoni [48]
If it's two different kinds of birds it's called competition.
6 0
3 years ago
The researchers also found that after 150 days, the relative change in virulence of B. thuringiensis was greater than the relati
Debora [2.8K]

Answer:  pathogen–host coevolution

Explanation:

A major driver of evolution is Reciprocal coevolution between host and pathogen. Rather than pathogen, one-sided adaptation to a nonchanging host, high virulence specifically favoured during pathogen–host coevolution. In all of the independent replicate populations under coevolution, the pathogen ( B. thuringiensis ) genotype BT-679 with known nematocidal toxin genes of C. elegans and high virulence specifically swept to fixation but only some of them go under one-sided adaptation,

so relative change in B. thuringiensis virulence was greater than the relative change in C. elegans resistance is due to the elevated copy numbers of the plasmid containing the nematocidal toxin genes .

7 0
3 years ago
The mitochondrion, like the nucleus, has two or more membrane layers. How is the innermost of these layers different from that o
tensa zangetsu [6.8K]

Answer:

The double membrane of the mitochondria is highly folded,and therefore wider when unfolded than that of the nucleus.This is an adaptive feature  to increase the surface area for reactions (electrochemical  gradient) by accommodating protons pumped into it by the proton motive force(PMF)  from the matrix to set up the electrochemical gradients needed to generate the energy needed by ATPase synthase enzymes for ATPs synthesis.

Required number of protons needed to be accommodated by the double membrane to generate enough energy for ATPase synthesis,therefore larger surface area is needed.

Explanation:

5 0
3 years ago
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