What is a "dead zone"? Question 16 options: Area of ocean with too little oxygen to sustain most life Natural areas, especially forests, where human actions have destroyed native species Section of an ecosystem being destroyed by invasive species Habitat for decomposers

If many different species live in an ecosystem, this the ecosystem to fill its a. populations b. niches c. producers d. communities

Aphids are tiny insects that feed on plants. ladybugs are to plants because they eat aphids. which type of organism are aphids in this scenario? co decomposers predators prey producers

Prior to the mt. st. helens eruption on may 18, 1980, satellite and topographic views of the volcano were captured. based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 9 options: 600 m 400 m 750 m 500 m