Answer:
Explanation:
Natural selection is the selection of species and organisms in a given region, or even different ecosystems that are in synergy between each other. Other mechanisms of species evolution include genetic drift, gene flow, mutations, and geographic isolation. The basic concept of natural selection is that favorable traits that are hereditary become more common in succeeding generations of a population of reproductive organisms, and that unfavorable traits that are hereditary become less common. Natural selection acts on the phenotype, or observable characteristics of an organism, such that individuals with favorable phenotypes are more likely to survive and reproduce than those with less favorable phenotypes. Gradually, the idea of plurality of existing species was developed and obtained from the evolutionary process, where natural selection prioritized some intraspecific variations through the struggle for survival of the fittest.
According to increase genetic diversity, we can infer that if a sort of animal species are isolated geographically, they are going to reproduce with by themselves, and then can orign such a new specie as the same specie, with the same characteristcs. In another hand, if you have a genetic drift, a gene flow or a mutation, it can changes throughout the species fenotypes and genotypes. Natural selection can force some populations to change their characteristics - to evolve. However, nothing compared to man-made selection triggered by ecological forces, such as selection under the conditions of environmental pollution.
To answer and summarize this answer, one factor that may influence natural selection and genetic diversity is climate. However we have a lot of factor that can influence naturak selection and genetic diversity, like the region, the quantite of species are living there and mainly the human beings action.
plz help. need this answered 4 science.
Answer:
Most ocean pollution begins on land.
Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides. Eighty percent of pollution to the marine environment comes from the land. One of the biggest sources is called nonpoint source pollution, which occurs as a result of runoff.
Answer:
Plastic pollution: The ocean is estimated to contain millions of tons of plastic debris, much of which comes from land-based sources.Chemical pollution: The ocean is also contaminated with a wide range of chemicals, including pesticides, herbicides, and industrial and household chemicals.Nutrient pollution: Excess nutrients, such as nitrogen and phosphorus, can enter the ocean from agricultural and urban runoff and contribute to the growth of harmful algal blooms.Oil pollution: Oil spills and other oil discharges into the water can have a negative effect on the animals and marine ecosystems there.
Explanation:
https://www.quora.com/What-percent-of-the-ocean-is-polluted
b. Earth’s average temperature will decrease.
c. Earth will experience greater temperature extremes.
d. Earth’s average temperature will be unaffected.
Answer:
A
Explanation:
Answer:
Explanation:
Removing the nucleus takes away all the genetic information necessary for the function of the cell away. Prokaryotes although lacking a nucleus do have a Nucloid region containing Naked strands of DNA which regulate their activity.
Simply removing the nucleus from a eukaryotic cell would not turn it into a prokaryotic cell, as the two cell types differ in many aspects, including structure and replication methods.
Removing the nucleus from a cell would not result in a new prokaryotic cell. Prokaryotic cells, such as bacteria, do not merely lack a nucleus. They also differ from eukaryotic cells in many other ways. For example, prokaryotic cells typically have a simpler structure and lack many of the organelles found in eukaryotic cells, such as mitochondria, Golgi bodies, or endoplasmic reticulum. Furthermore, prokaryotic and eukaryotic cells replicate in different ways, with prokaryotes using a process called binary fission and eukaryotes using mitosis and meiosis.
Cellular structure and replication methods are crucial characteristics that distinguish the two types of cells, so the removal of just the nucleus would not be sufficient to create a prokaryotic cell from a eukaryotic one.
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b. oxygen
c. carbon dioxide
d. alveoli