Most common rocks, after exposed to weathering which cover about ______% 0f the earth:
A. metamorphic rocks
B. Sedimentary rocks
C. Igneous rocks
D. Shales
A. metamorphic rocks
B. Sedimentary rocks
C. Igneous rocks
D. Shales
A. Acetic acid + H2O
B. Ethyl alcohol + CO2
C. Ethyl alcohol + H2O
D. All the above
A. 3.0m
B. 3.5m
C. 2.5m
D. 2.0m
A. Minimize run-off & store surplus water
B. Use non-arable lands effectively
C. Leave barren lands uncultivable to support desrtification degradation
D. Construction of mini dams & ponds to store water for live stock & other porposes
A. Jethrotull
B. Simonson
C. Norman Borlog
D. None of the above
Jethro Tull is known as the father of weed science.
A. Insecticides—Herbicides
B. Fungicides—Insecticides
C. Weedicides—insecticides
D. None of the above
A. Gene linkage, character se gregation and independent assortment
B. Gene linkage, dominance and segregation
C. Segregation, independent assortment and gene linkage
D. Segregation, independent assortment and dominance recessive ness