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2 years ago

The largest copper mine in the United States is located in Arizona. Why is copper considered to be a non-renewable resource?

Biology

2 answers:

professor190 [17]2 years ago

7 0

Answer:

B) Copper ore is not replaced once it is mined.

Explanation:

bixtya [17]2 years ago

5 0

Copper is considered to be a non-renewable resource as it takes a long amount of time for the copper deposits to form.

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The molecular basis of the Gram stain is the amount of _______ in the bacterial cell wall. bacteriophage spirochete peptidoglyca

Anna11 [10]

<h3>Answer;</h3>

peptidoglycan

The molecular basis of the Gram stain is the amount of peptidoglycan in the bacterial cell wall.

<h3>Explanation;</h3>

Gram stain is differential stain that is very useful for identifying and classifying bacteria as either gram negative or gram positive.
Gram negative are those that decolorize easily, such as E. coli, while Gram positive are those that retain the primary stain and do not decolorize easily.
The result depends on the bacteria cell wall structure, the cell wall of a Gram-negative bacterium is composed of 20 percent or less of peptidoglycan.

6 0

2 years ago

Consider a closed ecosystem which contains only mosquitoes and frogs. the mosquitoes feed on the blood of the frogs, and the fro

serious [3.7K]

It is impossible as there is a loss of energy between the transfer of energy between flogs and mosquitoes. This ecosystem would never be sustainable or in equilibrium. There is also no primary producer within this ecosystem. No ecosystem can exist without some initial source of energy that would be obtained using solar or chemical energy. For terrestrial ecosystems, plant primary producers would normally provide the initial energy into the ecosystem.

4 0

2 years ago

Answer the questions

solong [7]

Answer:

This is for the table at the top

Plentiful roaming space- increase - because they have more space they can live in.

Severe drought - decrease- because they wont have enough water

abundant food source - increase - Because they have enough food to sustain themselves

Habitat destruction - decrease - Because they won't have a place to live in

Elimination of predators - increase - Because there will be less animals hunting them for food.

Lack of competition - increase - Because they won't have to compete for food which will allow them to have more.

Disease outbreak - decrease - Because the disease will kill a lot of them and can potentially cause birth rates to go down

3 0

2 years ago

Question 4 .Which process is a physical change?

ohaa [14]

Explanation:

Which process is a physical change?

c. melting ice

If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same. Which of the following has occurred?

d. a physical change

A substance made up of two or more elements that have been chemically combined is called

c. a compound

Of the three ordinary states of matter, gas is the only state that

c. is highly compressible

In which state of matter do the particles have the most energy?

b. gas

Elements in group 18 called Noble Gases are highly reactive because they have 1 valence electron.

false

Atomic mass is the sum of

b. protons and neutrons

The current model of the atom is known as

a. Rutherford's model

Most elements on the periodic table are

d. metals

Which is not a quality of a non-metal?

a. shiny

Hope this helps.

3 0

2 years ago

use the base pairing rules to write the sequence that would pair with the following sequence: Agatcct

lukranit [14]

Answer:

TCTAGGA

Explanation:

The deoxyribonucleic acid (DNA) molecule consists of two single-strands, which are composed of four different types of nucleotide bases: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C). These two DNA strands run in an anti-parallel direction to each other. According to the base-pairing rules, Adenine always pairs with Thymine, while Guanine always pairs with Cytosine. In DNA, Thymine and Adenine form two hydrogen bonds between them, while Guanine and Cytosine form three hydrogen bonds between them.

8 0

2 years ago