Billy works at a chemical plant that produces pesticides. One day he felt the need to head to urgent care with muscle spasms that interfere with his everyday movement and breathing. Blood tests showed high levels of organophosphate pesticide, which is an acetylcholinesterase inhibitor. Explain to Billy what this means in regards to his muscle spasms.

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

Talking listening and reacting non verbally are all part of communicating

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them