Answer:
The cosmic microwave background radiation.
This is completely consistent with a fireball event in which the radiation field was in thermal equilibrium, and is perhaps the most convincing evidence for the Big Bang.
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If the problem is not addressed the world we become hot because of global warming.
three effective solutions would be a decrease in CO2, no more fossil fuels, and stop littering
Answer:
Tap Root is a straight tapering root growing vertically downward and forming the center from which subsidiary rootlets spring.
Answer:
Option B, are proteins embedded in the cell walls that transport water
Explanation:
Aquaporins are water channels that are present in the membrane of root cell and belong to the group of major intrinsic protein (MIP) family. It not only assists in rapid Trans membrane water transport but also regulate the flux of water between cells and within the cell
They are small, hydrophobic, intrinsic membrane proteins that create water channels for movement of water into and between cells across all organ systems and hence they are known as plumbing system for cells and
Thus, option B is correct
Answer:
After 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
Explanation:
The half-life of a radioactive isotope of an element is the time taken for half the atoms present in a given amount of the element to undergo decay or disintegration. For example, the half-life of carbon-14 isotope is 5730 years. This means that, if there are 100 atoms of carbon-14 present in a given sample of a material, in the next 5730 years, approximately, 50 atoms of carbon-14 will be left in the material.
Since the half-life of radioactive isotopes are constant, these radioactive isotopes are used in the determining the ages of ancient life-forms as well as rocks.
In the given example, after 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.