PLS HELP The presence of air is believed to be important for root growth in bean
plants. The apparatus available to conduct an investigation is shown
below. There are enough bottles and other materials to have multiple
setups. Additional air can be bubbled into the bottle through the rubber
tube..
State the purpose (or question) the
experimental setup is designed to test and write a possible hypothesis. *

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.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: