A scientist sampled the white grubs in a 3.4-hectare pasture by taking 200 randomly located 1 decimeter (= 100 square centimeters) soil cores. He counted 7.564 white grubs in these samples. Calculate the density of white grubs per square meter of soil per hectare, and the absolute population in the pasture.

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?