Our atmosphere is composed of several gases. The name of the gas we breathe, O2, is A) oxygen squared B) monoxide. C) oxide. D) diatomic oxygen.

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Why does bubbling occur when vinegar mixed with baking soda

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome