What do producers dictate in an ecosystem?
A. the size of the organisms
B. the age of the organisms
C. the amount of organisms

During which conditions would a river most likely develop? when evapotranspiration exceeds precipitation when it rains more than it snows when precipitation equals evapotranspiration when precipitation exceeds evapotranspiration

Scientists have noted that at present the earth is closest to the sun in january and farthest from the sun in july. the reverse will be true in 13,000 years and theearth will then be closer to the sun in july than january. how does earth's current proximity to the sun affect the climate in the northern hemisphere? winters are cooler and summers warmer because of the closer proximity of the earth to the sun. winters are warmer and summers cooler because of the closer proximity of the earth to the sun. winters are shorter and summers longer because of the closer proximity of the earth to the sun. winters are longer and summers shorter because of the closer proximity of the earth to the sun

Aline is drawn through (–4, 3) and (4, 3). which describes whether or not the line represents a direct variation? the line represents a direct variation because   -4\3 =4\3the line represents a direct variation because it is horizontal. the line does not represent a direct variation because it does not go through the origin. the line does not represent a direct variation because –4(3) ≠  4(3).