The discovery of new elements such as gallium demonstrated the predictivinnes ability of the periodic table proposed by Dimitri Medeleiev.
Mendeleieve observed that, when the elements were organized by ascending atomic mass, a periodic pattern of the properties appeared. The elements arranged in sane columns showed similar properties. So Mendeleiev predicted the existence of elements that had not been discovered but that he affirmed that should have some properties given the position that they would occupy.
Gallium is an example of one of the elements that was discovered and exhibited the properties predicted by the space that it occupies in the periodic table.
The ozone layer keeps harmful rays from the sun also the atmosphere burns up small deburey from rockets, space trash ex. Also small rocks and particles can get burned before hitting the earth. One of the greatest things is it keeps spefic gasses needed for life like oxygen in the world.
Answer:
C. Pathogens contain foreign molecules, or antigens, on their outer surface.
<span>For a behavior to evolve under the influence of natural selection, that behavior must be A. directed by genes.
Genes direct everything - based on them, you will be either fit enough to survive the natural selection or not.
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Answer:
b. Phosphate
Explanation:
Adenosine Triphosphate (ATP) is an adenine nucleotide molecule with three phosphate groups. This molecule (ATP) is known as the energy currency of the cell because it releases energy by its hydrolysis to ADP and Phosphate. During ATP hydrolysis, the phosphate bonds are broken down, and this energy is used to power different cellular activities.