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Why does dissolved oxygen matter?
Needed by aquatic organisms to respire
Why does some metal compounds matter?
Provides essential minerals for life
Why does toxic metal compounds matter?
It can poison organisms
Why does plastic matter?
It can stay in the ecosystem for a longer time
Why does sewage matter?
Can contain microbe which causes disease
Why does nitrates and phosphate matter?
Can cause eutrophication
What does NPK fertilizer contain?
Nitrogen (N), Phosphorus (P) and Potassium (K)
WHy might farmers utilize NPK fertilizer?
It provides the plant with all 3 essential elements
What are the 2 conditions needed for photosynthesis?
chlorophyll and light energy