Which of these is an organisms?

a bacteria

b heart

c virus

d long

A student is conducting an experiment to determine how cold temperatures affect the growth of tadpoles in a tank of water.

Boron occurs naturally as two isotopes. What is the difference between these isotopes? a) They have different numbers of electrons and different charges. b) They have different numbers of neutrons and different charges.

Which of the following is a decomposition reaction? BaO + H2O → Ba (OH) 2 CH4 + O2 → CO2 + H2O CaO + CO2 → CaCO3 PbCO3 → PbO + CO2

Which products are formed during the decomposition of magnesium nitride (Mg3N2) ? A. Mg + 3N2 B. 3Mg + 2N2 C. Mg + 3N D. 3Mg + N2 E. 2Mg + 3N

The charge of an atom is

If a thin and a thick wire are otherwise identical, what property is lower for the thicker wire? 1. current 2. static charge 3. resistance 4. voltage

Which set of numbers gives the correct possible values of l for n = 2?

Light from the sun is absorbed by the ground and converted to what?

What contains paired statements that can be used to identify orgainisms

The molecule below contains both an aldehyde and a ketone functional group. select only the carbonyl carbon atom of the aldehyde functional group. identify the carbon atom by selecting the atom and assigning it a map number of 1.