Throughout human history, major migrations have been spurred by sharp decreases in the availability of food caused by hazards or changes in climate For example, the Choose
was the result of a drought and wind-driven erosion. The Choose...
on the
other hand, was caused by a fungal disease that infected an important crop.

When species lose their habitats they may..

Which codon is the code for the amino acid histidine (his)?

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.