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Dominik [7]
3 years ago
7

DDT was used to do what? A. fetralizinh soil B. kill insects C. form ozone D. feeding animals

Biology
1 answer:
stiv31 [10]3 years ago
7 0
DDT was once used as an insecticide to B. kill insects. It was banned in 1972 because it thinned the eggshells of birds of prey like the patriotic bald eagle and the peregrine falcon.
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Are Fungi beneficial or harmful? Explain
Nata [24]

Answer:

Honestly it depends...

Explanation:

I would say overall fungi are beneficial because they feed on dead organic matter. They recycle most of the carbon and release nutrients to be used by other organisms. They are also used for medicinal purposes. Not to mention yeast is a fungus and bread is yummy.

But certain fungi are deadly if ingested or linked to plant and human diseases. Also mold is a fungus and nobody likes mold.

6 0
3 years ago
Originally, scientists classified organisms into five kingdoms based, in part, on _______ structure.
Umnica [9.8K]

Answer:

do you want this

Explanation:

3 0
3 years ago
Read 2 more answers
Mildred collects a sample of fossilized plant material. She takes it back to her lab to run some tests on it. Mildred is able to
xeze [42]

Answer:

The process that Mildred used is known as Radiocarbon dating

Note: The question is incomplete. The complete question is given below:

Mildred collects a sample of fossilized plant material. She takes it back to her lab to run some tests on it. Mildred is able to measure the amount of carbon-14 in her sample and compare this to the amount of carbon-12 in it. She uses this information to calculate that the fossil is 4,500 year old. The process that Mildred used is known as _______

Radiocarbon dating

Faulting

Indexing

Superposition

Explanation:

Radiocarbon dating is a process of determining the age estimates of various objects and materials using the radioactive properties of an isotope of carbon, carbon-14.

Radiocarbon dating uses the ratio of two isotopes of carbon, carbon-12 and carbon-14 present in materials which contains carbon to determine their age.

There is a fairly constant ratio of carbon-12 and carbon-14 in living organisms. However, at death, due to the decay of carbon-14 to carbon-12, the ratio begins to change. Since the rate of decay of carbon-14 is fairly constant, a property known as half-life, the time it has taken for carbon-14 to decay to carbon-12 can be calculated. This calculated time will givee the age of the fossilised material.

6 0
3 years ago
How many neutrons does an atom have with a mass of 108 and an atomic number of 47
Leviafan [203]

Answer:

Neutrons = 61

Explanation:

Protons = 47 Electrons = 47 Neutrons = 61

An atom contains equal numbers of protons and electrons. Atoms have no overall electrical charge because the number of positive protons equals the number of negative electrons. Number of protons = atomic number. All atoms of an element have the same number of protons. Atoms of different elements have different numbers of protons.

Atomic Number = Number of Protons OR Electrons Mass

Number = Number of Protons AND Neutrons

3 0
4 years ago
What are tides?
Anettt [7]

Answer:

A)The daily rise and fall of Earth's waters on its coastlines

Explanation:

7 0
3 years ago
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