What is the net primary productivity of an algal bed if the gross primary productivity in an algal bed is 7 kcal/m2/yr and respiration is 3 kcal/m2/yr?

This table shows data collected by a weather station. if these trends continue, what weather can you predict for the region for the upcoming week? day 1 day 2 day 3 temperature, upper atmosphere (ºf) 45 44 43 temperature, surface (ºf) 61 59 55 air pressure (inches of mercury) 30.00 29.96 29.50 a. fair skies, warm weather b. a blizzard c. rain storms d. a few clouds, but very cold