I suggest you watch the Amoeba Sisters video again, 1-2x and take notes.
Biomagnification is when toxins / heavy metal are present in small amounts in fish, but accumulate as you move into higher trophic levels. This is one reason why it can be toxic for humans to eat tertiary or quaternary consumers, such as swordfish, shark, etc.
Desired function of a garden is a planned space, usually outdoors, set aside for the display of an area.
The subsystems in a garden are plants, soil, water.
( I’m not entirely sure if I’m correct because I don’t really know what subsystem means but this is the best I got.)
Answer:
Mass extinctions and background extinctions
Explanation: