A certain atom of helium has 2 protons and 3 neutrons in its nucleus. It has 2 electrons in its electron cloud. What is the atomic mass of this atom?

Dichotomous keys ask A. open-ended questions about animal behavior. B. open-ended questions about easily observable characteristics. C. yes-or-no questions about animal behavior. D. yes-or-no questions about easily observable characteristics.

New york water pollution 50 years ago

Identify the activity in the value chain that involves receiving and handling of raw materials and other inputs to the product.

How did eyes come to be the color they are?

How does chromatin structure affect transcription?

What is being divided and equally distributed

Which of these groups of mammals is defined by having multicusped lower molars and a narrow pelvis? a. allotheria b. prototheria c. theria d. metatheria e. eutheria

Advantages and disadvantages of amniocentesis

Physical properties are those that an object or trace evidence has with just its physical existence, without altering it in any way with chemicals.

According to cell theory, which of the following are made of cells? Check all that apply flowers rocks blood water bactena sugar skin