Nina wants to learn about the toxic effects of chemicals on humans. which discipline should nina study?

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

Nkentucky, intoxicating beverages (beer, whiskey, wine, etc.) are involved to some extent in approximately % of collisions fatal to pedestrians.

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the