Select the part whose main job is to direct a plant cell's activities by sending instructions to different parts of the cell.

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars