Before the eukaryotic cell can go to the G1 phase to S
phase, it must first, grow. It is necessary for the eukaryotic cell to grow and
do this in order to prepare itself before undergoing the replication of DNA.
Collisions between molecules increase as the temperature rises. As temperature increases, so does the rate of chemical reaction.
In most animal life cycles, the multicellular diploid stage is the dominant ploidy.
The multicellular diploid stage is the most obvious life stage in the diploid-dominant life cycle, as it is in most animals, including humans. Almost all animals follow a diploid-dominant life cycle strategy in which the organism's only haploid cells are gametes. Almost all animals have a diploid-dominant life cycle, with the gametes being the only haploid cells. The gonads produce special diploid cells known as germ cells early in the development of an animal embryo. During the sporophyte phase, a diploid (two-chromosome) plant body grows and eventually produces spores via meiosis.
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Well, the greenhouse effect is a natural process by which some of the radiant heat from the Sun is captured in the lower atmosphere of the Earth, thus maintaining the temperature of the Earth's surface. The gases that help capture the heat, called “greenhouse gases,” include water vapor, carbon dioxide, methane, nitrous oxide, and a variety of manufactured chemicals. Some are emitted from natural sources; others are anthropogenic, resulting from human activities.
Over the past several decades, rising concentrations of greenhouse gases have been detected in the Earth's atmosphere. Although there is not universal agreement within the scientific community on the impacts of increasing concentrations of greenhouse gases, it has been theorized that they may lead to an increase in the average temperature of the Earth's surface. To date, it has been difficult to note such an increase conclusively because of the differences in temperature around the Earth and throughout the year, and because of the difficulty of distinguishing permanent temperature changes from the normal fluctuations of the Earth's climate. In addition, there is not universal agreement among scientists and climatologists on the potential impacts of an increase in the average temperature of the Earth, although it has been hypothesized that it could lead to a variety of changes in the global climate, sea level, agricultural patterns, and ecosystems that could be, on net, detrimental.
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