immature seed cones of conifers are usually green before pollination, and flowers of grasses are inconspicuously colored. what does this indicate about their pollination?

What does it mean for a cell membrane to be selectively permable

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing