Which of the following best explains why carbon dioxide must be added to water? a. Carbon dioxide bubbles can’t be produced if it is not added to the solution.

b. Carbon dioxide maintains the green color seen in the plant.

c. Carbon dioxide is a needed reactant (input) of photosynthesis.

d. Carbon dioxide does not need to be added.

Whay is the following best defines climate

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

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.