Answer:
your not aloud to do tests on here or at least don't say that for next time.
Explanation:
Answer: option B) Sympatric speciation is best described as a random event that disrupts the allele frequencies in a population
Explanation:
Sympatric speciation is an event/situation whereby organisms of the same species:
- live in the same territory or nearby territories ( i.e do not live in geographical isolation)
- DO NOT interbreed, but select a sexual mate from a much diverse territory to yield new species or offsprings.
This sexual selection then results in generations of offsprings that are genetically different from the rest of the same species due to uneven gene flow or disruption of alleles among the population of same species.
Thus, only option B is true.
Answer:
Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.
Explanation:
Answer:
None of the questions asked can be answered completely from the graph provided
Reason
1) Which source of electricity generation caused the most emissions?: The graph does provide the information of greenhouse gas emission from different sectors like electricity, transport, industry, agriculture, commercial and residential. Electricity can be generated from several sources like hydrothermal, nuclear, etc. However, information of how these sources contributes towards greenhouse gas emission via electricity sector is not provided in graph
2) What types of industries are responsible for greenhouse gas emissions?: The graph does provides the information about total greenhouse gas emissions from industries. However, individual contribution from different types of industries cannot be answered.
3) Which natural sources of greenhouse gas emissions are shown here?: The graph provides information about greenhouse gases emission only due to human activity like electricity generation, agriculture, etc. and not from natural sources.
4) Why is agriculture the largest source of greenhouse gas emissions?: The reason for largest emission of greenhouse gas due to agriculture cannot be answer from information provided.
5) What caused the dip in greenhouse gas emissions in transportation after 2007?: The reason for dip in greenhouse gas in transportation cannot be answer from information provided.
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Explanation:
Answer:
True
Explanation:
In inhibitory postsynaptic potentials, the opening of chlorine and potassium channels generally occurs so that chlorine enters, with a negative charge, and potassium leaves, with a positive charge. The synergistic effect of this ionic flow is the hyperpolarization of the cell, making it difficult for an action potential to occur.