DNA is a chain of nucleotides bonded together. On that chain there are particular portions of it that the sequence of the nucleotide codes for particular proteins; this is known as a gene. In eukaryotric cells, DNA is coiled around proteins such as histones to form chromatids which when two join at the centre by a centromere to form a chromosome.
When you breath oxygen enters your body and gets transported to your blood cells
<span>The environment has a greater amount of long nectar tubed flowers and short nectar tubed flowers causing disruptive selection in medium bill length birds.
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Answer:
Choose the correct label for each part of the experiment.
The plants that are under a UV light for eight hours
A. Experimental group
The amount of water that is given to all of the plants
D. controlled Variable
The plants that are under the light for six hours
B. Control Group
Explanation:
Answer: supercontinents
Triassic
amphibians
Carboniferous
For glaciation to begin, something needs to cause Earth's temperatures to drop. If this happens, snow that falls on the polar ice caps does not melt, and glaciers grow. As snow and ice reflect sunlight, the Earth's temperature is reduced even further, causing glaciers to continue growing.
Sea level changes cause marine transgressions and regressions. During a marine transgression, the shoreline moves inland, leaving sedimentary deposits that contain fossils. The shoreline retreats during a marine regression, leaving behind the deposited sediments.
Explanation:
