Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
Answer: It is the key to blocking infections
Explanation: I hope this is right :)
Answer: Kenneth is using the Bunsen burner to roast the marshmallows and eat them.
Explanation: you should not be eating in a lb environment without direct permission from your teacher or supervisor.
Nucleic acids function is to make up genetic information in living things. There are two types of nucleic acid and they are DNA and RNA. DNA is the basic instructions for living things. It is passed down from parent to offspring and is found in the nucles of the cell
The nutrient biomolecules which present in steak are lipids and proteins among the given choices.
Steak is also meat which made from muscle fibers. Steak does not have carbohydrates and polysaccharides but it does have vitamins and minerals other than fats and proteins.