They developed to be protected by the hard shell from parasites and ther predators.
The answer is bioaccumulation. Bioaccumulation is when toxins build up in a food chain. The animals at the top of the food chain are affected most severely because the concentration of toxin becomes most concentrated in the body tissues of the animals at the top of the food chain.
Answer:
Leaves lose the most chloroplasts at the end of summer.
<u>Answer</u>: Weber's/Weber-Fechner's law of just noticeable difference
This phychologoical law is used to quantify the perception of change for a given stimulus. The perceived change is proportional/constant ratio to the initial stimulus. Thus, it is the minimum amount of a stimulus intensity change that will produce noticeable variation in sensory experience.
As in the example, it has been shown that this law is not function very well for extremes of stimulation.
Answer:
structures are responsible for particular functions, and the cell membrane forms the boundary that controls what enters and leaves the cell
Explanation:
(In multicellular organisms, the body is a system of multiple interacting subsystems)
