Answer: Sinks towards the outer core
Explanation: The material which is less dense, means it is lighter in weight. Such substances tend to move more towards the crust of the Earth, whereas the heavier substances like iron, is more towards the core or centre of the Earth. This is because heavier substances tend to sink deeper. That’s why the light elements are found in the crust section of the Earth.
Rises towards the crust
In the Earth's crust, movement of materials is as a result of thermal convection that is occurring within the earth's crust.
When thermal convection occurs, the warm, less dense material inside earth rises towards the crust , while the cool and denser material with sink towards the outer core.
This rising of warm, dense material and sinking of cool, denser material causes a shift in the tectonic plates and stimulates the release of a convection current.
Which of the following is more common today? a. London-type smog
b. photochemical smog
c. acid smog
d. none of the above
Option B i.e Photochemical smog is the right and correct answer.
Photochemical smog is released fro vehicles and industries and it is actually the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere. Photochemical is a source or kind of air pollution and is also referred as summer smog.
Due to increasing vehicles and industries, the photochemical smog is more common today.
The answer is B.
!!! One Medal Question !!!. . - Give an example of a scientific question that could be investigated with an experiment. Then give an example of scientific question that could not be investigated in this way.
Biologists recently discovered that black wolves got their coat color from exchanging genes with dogs. This is an example of a. gene flow
d. a founder effect
e. gene pools
Using the theories of genes, we find that gene flow is the example of the discovery in which black wolves got their coat color from exchanging genes with dogs.
In biology, actually word gene can have several different meanings. The Mendelian gene is the basic unit of heredity and the molecular gene is a sequence of nucleotides in the DNA that is transcribed to produce a functional RNA. There are basically two types of molecular genes: protein-coding genes and noncoding genes.
During the gene expression, the DNA is first copied into RNA. The RNA can be directly functional or be intermediate template for a protein that performs a function. The transmission of the genes to an organism's offspring is the basis of the inheritance of the phenotypic traits. These genes make up different DNA sequences called the genotypes.
Hence, discovery by biologists that black wolves got their coat color from exchanging genes with dogs is an example of gene flow.
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The production of which substance by using cell technology allows scientists to make treatments that can target specific types of cancer cells?
c. monoclonal antibodiesExplanation;