The first large-scale use of ddt occurred in italy in 1943 when the insecticide was used for dusting refugees in a successful attempt to prevent an outbreak of a deadly disease spread by body lice which frequently occurs under wartime conditions of overcrowding and poor sanitation. what disease did ddt prevent in this situation?

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

If a keystone species is removed from an ecosystem