Answer:
The magnetic field of the earth was discovered by Carl Friedrich Gauss in 1835.
Answer:Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
Explanation:
The correct answer is :
electron transport
Explanation:
The light-dependent reactions utilize light energy to make two molecules required for the next stage of photosynthesis: the energy accommodation molecule ATP and the diminished electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles termed as chloroplasts.
Electron carriers are decreased during glycolysis and the citric acid cycle to NADH + H+ and FADH2. Certain carriers then donate electrons and protons to the atom carrier proteins of the electron transport chain. The last electron acceptor is oxygen. Coincidentally with oxygen, electrons and protons form molecules of water.
Answer:
1. It reduces the probability of sampling bias.
2. A random sample will be more representative of the whole population.
3. Allows the researcher to determine the efficacy of the fertilizer.
Explanation:
Selecting a simple random simple from a large population is a widely used method in science. Researchers select a random sample so every individual, in this case seedling, has an equal chance to be selected.
Therefore, it is an accurate method that, although is not free from errors, avoids or reduces the probability of sampling bias. Selecting a truly random tomato seedling will be more representative of the whole population of seedling instead of selecting carefully a seedling that already has specific or desired characteristics. Hence, this random sampling will allow the researcher to determine the efficacy of the fertilizer.
