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Paha777 [63]
3 years ago
7

A fossil is found to have a 14c level of 82.0 compared to living organisms. how old is the fossil

Biology
1 answer:
Alexus [3.1K]3 years ago
3 0
I think the answer to this is 
1148
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Identify the trend common to both the 15-day-old and 1-month-old guinea pigs' red blood cells. identify the trend common to both
Ainat [17]

The correct answer is: Both experienced the most rapid uptake of glucose at the beginning of the experiment.

The difference between pigs would be in their uptake of glucose during the whole experiment, where the younger guinea pig's cells took up more glucose than the older guinea pig's. This is because older guinea pigs have fewer glucose transporter proteins.


6 0
3 years ago
Sulfur emissions from industry combine with water in the atmosphere and form acid rain. A new factory is built very close to the
Setler79 [48]

Sulfur emissions from industry combine with water in the atmosphere and form acid rain. A new factory is built very close to the lake that Josh visits often. By examining the table that shows what pH range different species can survive, Josh decides that the aquatic life will be affected by the changes in pH that the lake. Josh correctly decides that organisms that will be the most affected are

A) perch and frogs.

B) mayfly and bass.

C) snails and clams.

D) frogs and salamanders.

The correct answer is option (C) snails and clams.

Acid rain is formed when oxides of sulfur and nitrogen combine with water molecules. Industries are one of the major contributors to acid rain. pH is a measure of acidity or alkalinity in water.

A factory built close to the lake can cause acid rain which affects the pH of the lake. Any change in the pH of the lake has an effect on the organisms in it. A pH of 7 is considered to be neutral and pH values below 7 indicates acidity and pH values above 7 indicates alkalinity. Organisms have an acid tolerance level beyond which they are affected and can die. Perch has an acid tolerance of up to pH 4.5 and frogs can tolerate an acidic pH of 4.0. The acid tolerance level of Mayfly and Bass is a pH of 5.5. Salamanders can tolerate an acidic pH of 5. Whereas, Snails and Clams have a very less pH tolerance of 6. They are highly susceptible to acidic pH.

Thus, Josh correctly decides that organisms that will be the most affected are snails and clams.



6 0
3 years ago
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Why is the term "food web" more appropriate than "food chain" in referring to the energy relationships among the species of a co
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Food web is more appropriate because of how wide spread the animal kingdom is, there are many predators for many different animals. For example, if a rabbit is killed by a wolf and the wolf eats a part of the carcass and leaves it, soon other scavengers will come and eat the remains, which then spans out into a web of animals, which allows us more data than what a chain may give us to visualize. 
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Describe how sonar technology involves electromagnetic or sound waves.
vlabodo [156]

Answer:

Lol, sonar technology sends sound waves into the ocean and when the waves hit something, the device measures how long it took to hit something and come back basically

8 0
3 years ago
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Why do plants produce less oxygen during the night?
Nikitich [7]

Answer:

D

Explanation:

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.

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