How many neutrons does element X have if its atomic number is 43 and its mass number is 164?

When dust and ash particles block out sunlight and reduce solar radiation earth experiences the

What three things are needed to predict population growth

Which of the following statements about homologous chromosomes is likely to be true?

The region of a chromosome where two sister chromatids are held together is called a

A recognized means of inquiry to provide scientific answers to a question is ___ A.) the Scientific method B.) a theory C.) a law D.) a hypothesis

What are the conditions required for natural selection? Check all that apply.

An aphid is an insect that has mouthparts to sip plant sap. when placed on a herbaceous stem, it soon has its mouthparts embedded and is withdrawing plant sap.

1. Which of the following is know as "the glue" that holds our Solar System and Galaxy together? A - Centripetal Force B-Gravity C - Magnetism D - Centrifugal Force

Which of the following could be considered a reliable source of scientific information? A. A scientist's presentation of experimental results at a scientific conference. B. A sales representative's glowing description of the benefits of a new drug.

Which statements describes how animals get their necessary water