What is the name of the one - or two-letter representation of an element?

A chemical symbol

B atomic number

C group symbol

D valence symbol

For increasing prooduction, what is common in poultry, fisheries and bee-keeping?

Compared to today, the treatment of breast cancer in the 1960s, typically:

Identify the correct statements about the eugenics movement.

Viruses are considered to be nonliving. how are viruses similar to living organisms? how are they different?

What does the restriction enzyme do to the DNA?

Which of the following is a prediction based on the cell theory that all organisms are made of cells, and all cells come from preexisting cells?1. If you boil nutrient broth and place it in an air-tight flask, cells will appear in the broth2.

During photosynthesis, the energy from sunlight is used to split water molecules. What happens to the hydrogen ions that are split from the water molecules?

Which part of a scientific argument must be supported by valid data

What is used as evidence for continental drift

Ocean floor rocks are. Continental rocks