How many acres of forest are left in the world?


Ans: 9.9 billion

Biology & Microbiology

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The parent material layer of a soil is composed of weathered

A. humus. B. organic detritus and roots. C. residual aluminum and iron. D. soil. E. rock fragments.

Biology & Microbiology

The event in human history that changed the natural balance of the carbon cycle was the:a

Industrial Revolution b. Agricultural Revolution c. evolution of primates d. invention of farming e. invention of the telegraph

Biology & Microbiology

Male fireflies are recognized by females of their species by the pattern of their flashings, while male crickets are recognized by females of their species by their chirping. These are examples of ____________.

A. behavioral isolation B. habitat isolation C. temporal isolation D. mechanical isolation

Biology & Microbiology

One of the waste products that accumulates during cellular functions is carbon dioxide. It is removed via the respiratory system

What is another waste product that accumulates during normal physiological functions in vertebrates? I) ammonia II) uric acid III) urea A) only I and III B) only II and III C) only I and II D) I, II, and III

Biology & Microbiology