Aflowering yucca plant and a yucca moth have a relationship. the adult female moth lays eggs in the plant, and the young moths eat some of the plant seeds when they first hatch. the rest of the seeds are pushed out of the plant by the young moths, which them land in the soil and grow into new plants. this relationship is best described as

Which feature do highland climates have that lower elevation areas do not?

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass