The widespread use of insecticides has transformed some crop eating insects that were previously minor pests into highly destructive species.
Answer the following statement true (T) or false (F)
True
Pests that were previously considered minor ones have survived exposure to pesticides and passed on that genetic resistance to their offspring. Since pesticides kill both destructive and beneficial insects, the beneficial population has been decimated allowing the minor pests to be become major pests.
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Phytoplankton is responsible for the synthesis of 90% to 96% of the surface ocean's carbohydrates
Indicate whether the statement is true or false
Lake-effect snowfall is caused by:
A) air mass modification related to the differential heating of land and water. B) warm air masses passing over a cold lake in the autumn. C) ice crystals falling from a cP air mass on the windward side of a lake. D) an mP air mass passing over a cold body of water.
________ climates are those in which the average temperature of the coldest month is below -3°C and the warmest monthly mean exceeds 10°C
Fill in the blank(s) with correct word
What Indigenous social movement organized land occupation and won titles for 350,000 people in Brazil?
A) Rural Landless Workers Movement (MST) B) Ejercito Zapatista de Liberación Nacional (EZLN) C) Confederation of Indigenous Nationalities (CONAI) D) Conamaq E) Mapuche