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3 years ago

When an organism has died, the ratio of C-14 to C-12 _____ over time.

Biology

2 answers:

FrozenT [24]3 years ago

5 0

Answer:

When an organism has died, the ratio of C-14 to C-12 it decreases over time Hope this helps!

Mrrafil [7]3 years ago

4 0

The answer is C. decreases.

C-14 and C-12 are carbon isotopes used to measure the approximate age of organic remains. C-12 is stable, and it does not break down into other elements over time. C-14 is not stable. It breaks down into N-14.

Organisms can incorporate C-14 into their bodies during the life. But when the die, C-14 is not incorporated anymore. After organisms' death, C-12 will remain stable, but C-14 will start to breaks down into N-14. So, it will be less C-14 and C-12 will remain the same. The ratio of C-14 to C-12 must decrease over time.

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3 years ago

Which of the following represents organisms in a food chain?

Lisa [10]

Answer: c seeds, mice, snakes

Explanation:

a hawks, owls, eagles NO

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b deer, rabbits, cows NO

This is not a food chain because all of the animals are herbivore, so they only eats plants and will not eat each other.

c seeds, mice, snakes YES

The seeds are a producer which is to be eaten by a consumer (the mouse), and which are then eaten by the predator, the snake.

d hyenas, vultures, crows NO

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3 years ago

Due to a genetic modification, a mouse has no horizontal cells in its retinas. What impact will this have on the mouse’s vision?

Karolina [17]

Due to a genetic modification, a mouse has no horizontal cells in its retinas and it does not expresses the connexin26.

What is horizontal cells?

The horizontal cells has receptive field with the neurobiotin and controlled by the electrical coupling.

Horizontal cells are the laterally interconnecting neurons having cell our bodies withinside the internal nuclear layer of the retina of vertebrate eyes. They assist combine and alter the enter from a couple of photoreceptor cells.

To read more about the horizontal cells refer link :

brainly.com/question/25508290

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