which of the following is an example of extrusive rock that has cooled too quickly for grains to form

1 answer:

7 0

The correct answer is<span> a. Volcanic glass

Volcanic glass is also known as Obsidian. It is formed when lava cools down too rapidly and crystals grow minimally, without grains.</span>

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Cultures of a bacterial species were incubated on the shelf of a refrigerator (5 C), out on a lab bench top (22 C), on the shelf

Setler79 [48]

D) Psychrotrophs.

Explanation:

Psychrotrophs are those bacteria which can tolerate cold temperature and have optimum growth above 15 degree Celsius.
Halophiles prefer high salt concentration.
Mesophiles prefer temperatures with a average of 37 degree Celsius.
Anaerobes grow in absence of oxygen.
In the given experiment, none of the bacterial cultures were placed in saline or anaerobic conditions. So, the bacterial species is not an anaerobe or halophile.
Again the cultures did not show growth at 37 degree celsius so they are not mesophiles.
Maximum growth at 22 degree celsius and a little growth in refrigerator make it obvious that the species is a Psychrotroph.

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3 years ago

Can someone please help me with this :)

kirill [66]

It is a that is what I think

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3 years ago

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Bonnie is preparing dinner and begins to wonder why cutting onions always makes her cry. Using the scientific method, she decide

Maslowich

Answer: c. If you cut an onion near a person, then his/her eyes will always begin to produce tears

Explanation:

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3 years ago

Which of the following is NOT a role of connective tissue?

Mashcka [7]

Answer:

D. ABSORPTION

Explanation:

Connective tissues are a type of tissue, made up of ground substance, fibers and cells.

Connecting tissues perform tissue support function using collagen, elastic, reticular fibers.

It is also involved in transport of substances using hemoglobin in blood for transport of nutrients and oxygen, insulating the body, storing of fuel.

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3 years ago

If Darwin was to be alive today, what do you think will be his observation on evolution?

STatiana [176]

Darwin would be happy that his theory of evolution is correct. Stating that biological evolution is through natural selection of inherited traits that enable a species to survive, compete and reproduce.

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2 years ago