This feature on Earth forms underground. This one seen here was formed from water flowing through layers of limestone rock underground. What is this feature called? A) cavern B) canyon C) pothole D) underground spring

A thermometer that uses a liquid to measure temperature works because

Which population of organisms would be in greatest danger of becoming extinct? A) A population of organisms having few variations living in a stable environment. B) A population of organisms having few variations living in an unstable environment.

A closed 5.00 L container is filled with a mixture of 4.00 moles of hydrogen gas, 8.00 moles of oxygen, 12.0 moles of helium, and 6.00 moles of nitrogen. What is the pressure due to the oxygen in this container at a temperature of 25 °C?

Which two factors are most likely to cause a plants guard cell to open its stomata

How many total electrons can be contained in the 4d sublevel? 2 6 10 14

Why does sodium benzoate dissolve so well in water, whereas benzoic acid does not?

A neutral isotope has 45 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number and number of protons. element symbol: mass number: number of protons:

Write a nuclear equation for the alpha decay of 23892U. 23892U → 0-1e + 23893Np23892U → 10n + 23792U23892U → 42He + 23490Th23892U → 0-1e + 23891Pa23892U → 0+1e + 23891Pa

You want to test how the mass of a reactant affects the speed of a reaction. Which of the following is an example of a controlled experiment to test this?

How do you balance phosphorus, potassium and nitrogen in water?