Answer:
naturalistic observation
Explanation:
The best possible way to study how tigers interact with each other in their habitats would be to use a naturalistic observation. This type of observation focuses on observing the main subject of the study in it's natural environment without interfering in any sort of way. This allows the scientists to observe exactly how the tigers interact when there are no humans around.
When there is a mutation in a gene that produces an enzyme, it can cause disease. Phenylketonuria<span> or PKU is a rare inherited disorder that causes the build up of phenylalanine. This can lead to brain damage in individuals with this disorder if they don't eat a very protein-- restricted diet. The gene mutation doesn't allow the creation of the </span>enzyme<span>needed to break down Phenylalanine, an amino acid in proteins.
hope this helps
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C is the the correct answer
Answer:
Answer is glucose, which is made for plants