The Earth layer composed of liquid iron and nickel is the Outer Core. This is the third layer from the surface and its fluid motion creates Earth's magnetic field.
The layer of the Earth which is primarily composed of liquid iron and nickel is the Outer Core. The Earth can be divided into four main layers: the crust, the mantle, the outer core, and the inner core. The Outer Core, which is the third layer of the Earth if you start from the surface, is a sea of mostly molten iron and nickel. This liquid layer is about 2200 kilometers (1367 miles) thick and creates the Earth's magnetic field due to the movement within it.
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Answer;
-Cell theory
The most accepted theory regarding the make-up of living things is the cell theory.
Explanation;
-Cell theory is a theory that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells.
-According to cell theory; All living beings are made up of cells. Cell is the most basic unit of life. All cells must come from pre-existing cells.
-Cells are autonomous, in that they can acquire and use nutrients to obtain energy and they can reproduce. Simple organisms like bacteria are unicellular and composed of a single cell.
Answer:
gene
Explanation:
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.
Genotype and Phenotype, i'm pretty sure. Two alleles of a genotype and phenotype are inherited.
provides structure and support
b. industry
c. agriculture
d. none of the above
Forestry does not contribute to water pollution. Therefore, option A is correct.
Water contamination is the tainting of bodies of water, typically as a result of human activity, which has a detrimental impact on their uses. Aquifers, reservoirs, lakes, rivers, seas, and groundwater are all examples of bodies of water. When contaminants are introduced into these water bodies, water contamination results.
The main causes of water pollution are bacteria, viruses, parasites, insecticides, pharmaceuticals, plastics, feces, radioactive materials, fertilizers, and pesticides. These compounds are frequently invisible contaminants since they do not always alter the color of the water.
Industry and agriculture cause water pollution, while forestry does not. Hence, option A is correct.
Learn more about water pollution, here:
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Answer: d none of the above
Explanation:
:)
Answer:
Explanation:
increased demand for natural resources; need to enforce environmental laws and regulations; need to analyze human impact on the environment and to invent ways to restore it