Penicillin was discovered by 1.flemin 2.jenner 3.robert brown 4.laveran

Why might surface mining be less risky for miners than underground mining? a. surface miners can become trapped in a collapsed mine. b. surface miners work in dusty, enclosed areas. c. surface miners work aboveground. d. surface miners use elevators to enter mines.

*will mark brainliest to the first and correct answer less species diversity results in less a. oxygen b. food c. drinkable water d. all of the above

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution