Which element must be present in an organic compound? (1) hydrogen (3) carbon(2) oxygen (4) nitrogen

How have the greenhouse gasses increased from the year 2000 to 2018

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.