Astudent wants to know if the bubbles on this water plant are oxygen gas
(02). however, identifying a gas as o2 with direct evidence requires many
kinds of equipment.
which observation would provide indirect evidence that the bubbles are 02?
meurement of the plant's growth over time

a. the production of carbon dioxide through the process of photosynthesis

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.