The crabs are salt water organisms, so they'll have a higher concentration gradient than the distilled water. In other words, they're hypertonic to the distilled water. This will cause them to take on water and expand; their cells bursting.
The independent variable of an experiment is the one that is intentionally changed or manipulated to see the results of changing said variable.
We are told that in each different group, the amount of caffeine that is given to the dogs changes - in the control group, they get no caffeine, in the 2nd group, they get 10 mg of caffeine each, and in the 3rd group, they get 50 mg of caffeine each.
Therefore, since the amount of caffeine that is given to the dogs is the only variable that is being manipulated, this is the independent variable.
Answer: Option C. Predation
Explanation:
The predation type of relationship consists of the interactions between two species and their consequent effects on each other. In the predator prey relationship, one species is feeding on the other species. The prey species is the animal being fed on, and the predator is the animal being fed.
The flytrap is an example of a predator because, it secrete digestive enzymes that kills the insect. The insect is an example of a prey because, the insect was engulfed by the flytrap.
Diet and weight-loss companies create the illusion of isolation, as if everyone else has met the ideal beauty standard and that “you aren’t right now, but you can too!” Instead of focusing on the health of the customer, these companies promote their methods of weight-loss before any other. Use skepticism if an advertisement makes claims that seem “too good to be true”, are scientifically unsubstantiated, only provide one perspective/way of thinking, or appear to prioritize sales over health.
