A scientist has been collecting data on the soil composition in a forest after a wildfire. Every year she visits the forest and
takes a sample from the same area. She then analyzes the sample and determines its content. She plans on collecting data for ten years and then determining the trends that have occurred. Which type of investigation is the scientist performing? collective
Using the formula cards again, add the coefficient of 2 in front of the formula and have them recalculate the number of each element and the total number of atoms in each element.
<span>Kind of substance besides water: The best example of hydrogen bonding excluding water is DNA. The two strands of polymers are connected by hydrogen bonds between the nucleotide bases</span>.
