What would happen if guard cells in a plant
a. diseases would quickly invade the plant.
b. photosynthesis would occur more slowly.
c. stomatitis would not open and close.
d. chloroplasts would change color.
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Describe five factors that influence the value of fuel

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.