Which of these is NOT a source of the extra nutrients that would contribute to cultural eutrophication?

A. farms

B. golf courses

C. factory emissions

D. water treatment plants

What are the three main fuels that stars use for fusion? Describe the process of burning each fuel and include at least one paragraph for each of the three main fuels.

A prostate might be prescribed a total dose ionizing radiation of 72 Gy. In traditional units of rad, how many rad have been prescribed?

Why does the density of gas in a hot air balloon decrease as the gas is heated? A. The mass of gas increases as temperature increases. B. The volume of gas decreases as temperature increases. C. The mass of gas decreases as temperature increases. D.

What is the percentage of sodium presents in sodium hydrogen carbonate NaHCO3

An atom has 5 protons and 7 neutrons. What is its mass number?

What happens when the electron moves from the first energy level to the second energy level? Energy is absorbed, and an emission line is produced. Energy is released, and an emission line is produced. Energy is absorbed by the atom.

Calculate how many mg is lethal to resident Arnold who weighs 45 kg and resident Harold who weighs 96 kg. The LD50 of lead is 450 mg/kg

The specific heat of aluminum is 0.125 cal/g °C. If 12.5 grams of aluminum were heated from 20.0 °C to 100.0 °C, calories of heat energy would be absorbed by the aluminum.

What type of radioactive decay results in uranium-238 becoming thorium-234?

What is the differnce between a stimlus and a response