Which organisms were the first to produce O2?

What will be an ideal response?


Oxygenic cyanobacteria were the first organisms to produce O2.

Environmental & Atmospheric Sciences

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The conversion of water from vapor to liquid is the process of

A) convection. B) condensation. C) evaporation. D) saturation.

Environmental & Atmospheric Sciences

Some coastal landforms are built by sea creatures capable of producing rocklike material called ________.

A) polyps B) clay C) calcium carbonate D) granite E) sand

Environmental & Atmospheric Sciences

Which of the following statements is true about economic relations between African colonies and their ruling countries?

A. Ports and railroads were built to carry exports of African resources to Europe. B. Water projects served African subsistence farmers. C. Africa became a center of the global economy. D. African laborers were well treated, because labor was in short supply.

Environmental & Atmospheric Sciences

Edge cities emerged as a consequence of

A) highway construction. B) suburbanization. C) gentrification. D) remanufacturing. E) census classification.

Environmental & Atmospheric Sciences