What needs to be in place for natural selection to happen?

Which of the following requires the action of a first class lever in the body

Acoastal community is drafting a plan in case of a hurricane. which action is an appropriate element for an effective plan? 1.) creating a map of areas that are not affected by storm surge 2.) plotting the location of all fire hydrants along major travel routes 3.) relocating any individuals who might be affected by the disaster 4.) identifying multiple evacuation routes for each area of the community

What are possible signs and symptoms of drug addiction? check all that apply. declining physical appearance and health failing to meet family, school, or work obligations needing less and less of a drug to get the same effect using drugs when there is no health benefit failing in attempts to stop using a drug stealing to get drugs