Which is true about scientific knowledge?

A. It is rarely proven wrong.

B. It is not based on observation.

C. It is agreed upon by all scientists.

D. It changes as new evidence is found.

A healthy environment depends on biogeochemical cycles maintaining a balance of input and output. Deforestation and the burning of fossil fuels from industry are increasing the amount of carbon dioxide in the atmosphere.

Which of the following classes of biological molecules consist of both small molecules and macromolecular polymers?

Which of these would be considered an interference? A. The sky is blue. B. Cats really like milk. C. The bowling back runs downhill. D. Mockingbirds sing several different songs.

Which of the following events does NOT occur during prophase? a. Identifiable chromosomes appear. b. The nuclear envelope begins to fragment. c. Chromatin in the nucleus condenses. d. Chromosomes replicate themselves.

A protein is composed of one or more long unbranched chains called

Chemical reactions that release energy Question 6 options: will always explode. need catalysts to occur. often occur spontaneously. will not occur.

Match the amino acid (AA) with its correct side chain category: 1) proline A) acidic AA 2) histidine B) nonpolar AA 3) alanine C) basic AA 4) threonine D) polar AA 5) tryptophan 6) aspartic acid

In which structure of the female reproductive system are eggs priduced

In a forest, rabbits are the prey to owls. An increase in the number of rabbits in the forest would result in Group of answer choices A. an increase in the number of owls. B. an increase in the number of producers.

How are viruses different from bacteria Bacteria are heterotrophic while viruses are autotrophic. Bacteria are living organisms; viruses are not. Bacteria have a membrane bound nucleus while viruses do not.