Given the general chemical formula X2O, to what group in the periodic table does the Period 2 element represented by X belong?

A. 1

B. 16

C. 2

D. 17

As the number of rabbits in a community goes up the number foxes in the same community goes up this is an example of what type of relationship a direct be in direct c cyclic d non-related

In a paramecium, the nucleus divides first and then the cytoplasm divides, forming two identical daughter cells. Which type of reproduction takes place in paramecia? A. fission, B. budding, C. fragmentation.

Why is a home heating system a good model for the way that the thyroid gland is controlled by the pituitary gland and hypothalamus? Describe how each system is controlled.

Maya tried to hit four golf balls into a hole marked with a flag. The diagram shows where the golf balls landed, Which best describes Maya's results?

When you rub your hands together on a cold day, you use friction to convert A. Mechanical energy into thermal energy B. Thermal energy into nuclear energy C. Nuclear energy into electrical energy D. Electrical energy into electromagnetic energy

What could a dog living now and a car living thousnads if years ago have in common

The process of transducing air pressure waves into neural messages that the brain interprets as meaningful sound is known as

Why does photosynthesis require water? a. because water provides oxygen atoms. b. because water provides electrons. c. because water accepts electrons. d. because water acts as a catalyst.

An education guess or rational explanation about a specific phenomenon

What are the technical name for red blood cells white blood cells and platelets?