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Effectus [21]
3 years ago
5

Fire ants in the southeastern United States were accidentally introduced over

Biology
1 answer:
NeTakaya3 years ago
6 0
There legs had to adapt to their new surroundings in order to survive so as time passed they evolved. I think it’s called natural selection.
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Food chains and webs not only describe the order organisms are eaten, but they also describe the _____.
Anastasy [175]
They also,describe the flow energy, or what animal eats what.
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3 years ago
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A scientist is observing onion cells and human cheek cells under a microscope. Which observation does she most likely make?
saw5 [17]

The main difference between a plant cell and the animal cell is the presence of cell wall.

In the plant cell, the cell wall is present, but in the animal cell, the cell wall is absent.

Hence, in the onion cells, the cell wall around the cell would be clearly visible, whereas in the case of cheek cell, the cell would only be lined by a cell membrane, a cell wall would not be present.

Further, the plant cell would have the chloroplast, as they perform photosynthesis, but the animal cell would not have chloroplast. Unlike animal cell, the central vacuole in the plant cell is bigger and clearly visible.

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3 years ago
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Most cells cannot harness heat to perform work because
Daniel [21]

Answer:

Temperature is usually uniform throughout a cell (Ans. C)

Explanation:

Heat or thermal energy is a kinetic energy. That is connected with the random movements present in the atoms. Temperature is usually uniform throughout the cell so the most cell can not harness heat to perform work.

Heat is a type of energy which is transfer from one body to another body due to the temperature difference.

It can only perform work if it is transferred from one source which is warmer to a body which is cooler. The temperature in living organisms is usually kept very constant due to the process of homeostasis.

5 0
3 years ago
Nitrogen-fixing bacteria can convert ammonia into nitrogen?
Korolek [52]

Answer:

In biology, symbiotic nitrogen-fixing bacteria invade the root hairs of host plants where increment or multiply  and stimulate  formation of root nodules,  enlargements of plant cells and bacteria in intimate association.  The  bacteria   that change nitrogen gas from the atmosphere into solid nitrogen usable by plants are called nitrogen-fixing  bacteria. These bacteria are found both in the soil and in symbiotic relationship with plants.

Explanation:

6 0
3 years ago
What energy is needed to break a bond between two atoms?
marysya [2.9K]
<span>Covalent bonds are one of four types of chemical bonds. The other three are ionic bonds, metallic bonds and hydrogen bonds. Each bond type differs in the way atom share electrons. In covalent bonds, two atoms completely share one or more pairs of electrons.</span>
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3 years ago
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