Large crystals such as garnet surrounded by a fine-grained matrix in a metamorphic rock are called:
A) vesicles
B) phenocrysts
C) inclusions
D) porphyroblasts
Ans: D) porphyroblasts
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The ecological economic paradigm argues that the environment encompasses the economy because the environment is essential to provide
A) the energy necessary to run our homes and factories. B) solar energy needed for plants and to light our environment during the day. C) transportation along highways, railways, rivers, and oceans. D) vital raw materials and ecosystem services and absorb wastes.
What is a disadvantage of using tidal power?
A) It has high operating costs. B) It requires a large amount of man power. C) It cannot sustain the world's needs. D) It adds pollutants to the air.
Trees and shrubs that seasonally loose their leaves are called
A) deciduous. B) evergreens. C) bryophytes. D) annual herbs.
Why is electronic waste a problem?
A. It contains toxic heavy metals. B. It contains toxic dioxin. C. It contains toxic PCBs. D. It contains lead-based paint.