The correct answer is C.commensalism; parasitism
At first it is a commensalism relationship which becomes parasitic when the living cells get attacked.
Answer:
The active ingredients in many pesticides are chemical compounds that kill organisms such as insects, molds, and weeds. Proponents claim that the use of pesticides improves crop yields and thus protects land and soil by reducing the conversion of forests and wetlands to cropland.
Explanation:
P waves do not move through liquid material
Smallpox- began Africa, spread through trade and human interaction.
Chestnut blight-isn't this a chestnut found in America?
Answer:
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