URGENT PLS HELP. A student researcher wanted to know how light affected the rate of photosynthesis in plants. The student placed one group of plants in direct sunlight for 8 hours
per day and another group in the shade for 8 hours per day. All other variables were kept constant in each group. The student measured the height of the plant
stems every Monday for five weeks. The data for the plants in shade is below.

Calculate the rate of growth of the plants between week one and five. SHOW ALL WORK and be sure to include the correct unit.

Which statements are true of a scientific theory but not a hypothesis

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.