The correct answer is a - silicon dioxide.
Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.
Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.
Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.
Explanation:
Geologists use the law of superposition to determine the relative ages of sedimentary rock layers.
Answer:
What does the prefix Iono mean?
a combining form with the meanings “ion,” “ionized,” “ionosphere,” used in the formation of compound words: ionophore.
Convective cloud types are indicated by the root word “cumulo,” which means “heap” in Latin. Convective clouds may become very tall and are rounded on top. Clouds are also classified by their altitude and their ability to create precipitation.
Iso-: A prefix meaning "equal," used in...
Iso-: A prefix meaning "equal," used in meteorology in conjunction with another word to denote lines on a weather map along which values of a given element, such as temperature (isotherm), are constant.
Explanation:
Cellular respiration uses oxygen as a reactant and photosynthesis does not.
Cellular respiration produces excess ATP and photosynthesis does not.
Cellular respiration is performed by consumers and photosynthesis is not.
Cellular respiration releases energy from glucose molecules and photosynthesis does not.
These all apply
It can be C or D but I think the answer is D
