Elige la opción falsa: * 2 points
a) La lluvia ácida provoca daños al medio ambiente.
b) El dióxido de carbono es el único contaminante en la atmósfera.
c) Las máquinas en mal estado, aumentan la contaminación.
d) El petróleo, el gas y el carbón mineral son ejemplos de combustibles fósiles.

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

How does the carbon cycle involve an exchange of carbon

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.