Which of the following is NOT an engineering control? Select one:

1.
Biohazard bags, boxes, and hampers

2.
Sharps containers

3.
Biological safety cabinets (BSCs).

4.
Mechanical pipettes

5.
Covering your cough when you sneeze.

Explain why ecosystem diversity results in species diversity in a healthy biosphere

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

20 the main source of energy for our planet comes from the