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eimsori [14]
3 years ago
15

Dr. Franklin wants to assess the intelligence of 1,000 people ages 20, 30 and 40. If he does this as a cross-sectional study, he

has some concerns that since these people were all born at different times and have had different experiences and opportunities, there may be _____.
Biology
1 answer:
Brilliant_brown [7]3 years ago
4 0

Answer:

The given blank can be filled with cohort effect.

Explanation:

A cohort effect refers to the specific influence of a group bonded by common life experiences or time. Cohorts in an organization are generally illustrated by entry date and retain some common features like cohesiveness, size, and competition, which can influence the organization.  

A cohort refers to a group of individuals who shares common experiences or features like the region where they were born, their years of birth, and others. Cohort effects are a concern for the scientists working in the fields like epidemiology, sociology, and psychology.  

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How and why the plagioclase feldspar in basaltic rocks differs from that in grantic rocks
Tanya [424]

Both are different because of their Silica content and the rates of cooling.

Explanation:

  • Plagioclase feldspar is igneous rocks.  This group rocks are forming from minerals. They are very major to the dominant minerals in igneous rocks which present on the earth’s crust. Rhyolite, andesite, basalt, diorite and granite are the extrusive and intrusive igneous salts where plagioclase is the major constituents.
  • Igneous rocks are the rocks which formed due to the crystallisation of magma. The main difference between granite and basalt is that one their silica content and second their rates of cooling. A granite contains 73%SiO2 and basalt contains 53% SiO2. Both are slowly cooled inside the earth’s crust.
7 0
3 years ago
Why might one sample of sulfur have a glassy luster while another has a dull, earthy luster? Explain
grigory [225]

Allotropy

Explanation:

Allotropy is existence of a chemical element in two or more different states. When an element exists in more than one physical state, they are said to be allotropes.

Many different substances exhibits allotropy and it largely impacts their physical state.

Carbon has two main allotropes; graphite and diamond. Graphite is a soft substance and can easily be broken. Diamond is the hardest natural substance that is known.

  • A sulfur with a glassy luster and another with a dull earthy luster signifies two sulfur allotropes.

Learn more:

Variable composition brainly.com/question/2043894

#learnwithBrainly

8 0
3 years ago
Substances in food or supplements that destroy free radicals and slow their formation are
Ne4ueva [31]
These are the antioxidants. An antioxidant is an atom that hinders the oxidation of different particles. Oxidation is a concoction response that can deliver free radicals, prompting chain responses that may harm cells. 
Antioxidants agents shield the body from harm caused by unsafe atoms called free radicals. Numerous specialists trust this harm is a factor in the advancement of vein infection, tumor, and different conditions.
5 0
2 years ago
The burning of fossil fuels by cars and factories has most affected the ______________ cycle.
trasher [3.6K]
I Think Its The Carbon Cycle

6 0
3 years ago
Read 2 more answers
What is photoexcitation
Dahasolnce [82]
Photoexcitation<span> is the photoelectrochemical process of electron excitation by photon absorption, when the energy of the photon is too low to cause photoionization. The absorption of the photon takes place in accordance with Planck's quantum theory.</span>
8 0
2 years ago
Read 2 more answers
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