Joe was out hiking and observed the landform in the picture below. Back in his laboratory, he compiled notes about his observations; however, he could not determine how the landform was created. Classify Joe’s descriptions into the correct categories: mechanical weathering, chemical weathering, or erosion.

answer; ////increased water pollution; ///////////////////////

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.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.