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Svet_ta [14]
3 years ago
11

Leonard designed a parallel circuit to light two lightbulbs. But his circuit doesn’t work. Which two items in the circuit must b

e addressed for the lightbulbs to light as planned?
Biology
1 answer:
Anuta_ua [19.1K]3 years ago
7 0
There must be 2 resistors for the two lightbulbs and an indicator bulb!
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How do the two species that make up a lichen benefit from their symbiotic association? (Select all that apply.)
Marta_Voda [28]

Answer:

the correct answers are C and D: "<em>Both partners are able to grow on substrates on which each would not be able to grow on their own</em>", and "<em>The fungi receive carbohydrates and, in some cases nitrogen, from the algae, while the algae gain a "home" that anchors them on the substrate</em>".

Explanation:

Lichens are the result of a symbiotic association between algae and a fungus. These two organisms must cooperate to survive in places under certain inhospitable conditions, where otherwise, they would not be able to survive by themselves. Algaes are the photosynthetic organisms that provide carbohydrates to fungus. These last ones, get the carbon and energy they need to grow, and in exchange, they protect the algae from dehydration and radiation, and they might also provide minerals for their survival. Algae can also get a way to get attached to the substrate. When instead of regular algae, there is a prokaryotic cyanobacterium, these can also supply with fix nitrogen to fungus, in the form of nitrogenous compounds.            

4 0
3 years ago
What four major divisions make up the history of life on earth in the geologic time scale
Umnica [9.8K]

Precambrian time, the Paleozoic era, the Mesozoic era, and the Cenozoic era
5 0
3 years ago
8.
Debora [2.8K]

Answer:

The virus uses the host cell to make new viral parts,

Explanation:

4 0
3 years ago
how could incoming radiant energy from the sun be affected as a result of changes in albedo in the Arctic region?
lapo4ka [179]
As albedo in the Arctic region is getting higher, incoming radiant energy of the sun will be more reflected. If albedo in the Arctic region is falling, incomig radiant of the sun will be more absorbed.
Albedo is a name of overall reflectivity in terms of the Sun's spectrum.
8 0
3 years ago
Differentiate between density-dependent and
Setler [38]

Answer/Explanation:

Density-dependent limiting factors are non living and biotic factors that affect the size and growth of a population based on the population density, while density-independent limiting factors are those factors that do not depend on the density of a population before they can have an effect on the growth and size of the population.

Examples of density-dependent limiting factors are predation, disease, Parasitism, competition. These rely on the density of a population in order to affect the growth and size of a population.

On the other hand, examples of density-independent limiting factors are pollution, flood, temperature.

8 0
3 years ago
Read 2 more answers
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