El aumento del oxígeno durante el Proterozoico produjo una gran extinción de los organismos anaerobios primitivos y una disminución del efecto invernadero que condujo a intensas glaciaciones en todo el planeta. ¿ Se puede afirmar que este fenómeno fue un proceso inducido por los seres vivos?

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays