Reproductive technologies allow culture to shape biology. These technologies are not new, but they are rapidly expanding. Identify the following technologies as either having existed for a long time in various forms and in various cultures, or as new technologies that have emerged over the last thirty years.
1. contraceptives
2. thirty years
3. cesarean surgeries
4. in various cultures for many years
5. DNA testing for paternity
6. testing for the sex of unborn children
7. abortion

Why would a drug the damages capsids treat a viral infection

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.

Why do we perceive objects as retaining their brightness under different lighting levels?