A group of 4 students want to design an experiment in an effort to support the hypothesis, “Sunlight is needed for the normal healthy growth of plants.” Each student presented a possible experiment. Student #1: Purchase 20 plants. Plant 10 of the plants in 3 cups of soil and place all of the cups in the sun. Take the other 10 plants and put them in 2 cups of soil, then place this group in the sun under a box. Observe and document changes. Student #2: Place 10 plants outside in the sunlight. Place the other 10 plants outside under a box. Plant both in the same amount of soil and provide all with the same amount of water. Document observations. Student #3: Place 20 plants in front of a window. Give all of the plants the same amount of water and the same type of soil. Observe plants for any changes. Student #4: Obtain two seeds. Place one seed outside and one on an inside window sill. Observe and document which seed sprouts the fastest. Which student provides the best reason for choosing his or her experiment to test the hypothesis?

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Ineed the answer asap. in order to be considered alive, an organism must simultaneously possess the characteristics of homeostasis, heredity, cells, reproduction, and

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.