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3 years ago

HELP 20 POINTS 8th grade science

Biology

1 answer:

Komok [63]3 years ago

3 0

Answer:

pyroclastic flow is a fast moving current of hot gas and volcanic matter that flows along the ground away from a volcano at high velocities.

Hotspot is volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle

caldera-a large volcanic crater, especially one formed by a major eruption leading to the collapse of the mouth of the volcano.

tephra-rock fragments and particles ejected by a volcanic eruption

epicenter-the central point of something, typically a difficult or unpleasant situation

fault-an extended break in a body of rock, marked by the relative displacement and discontinuity of strata on either side of a particular surface

surface waves- mechanical wave that propagates along the interface between differing media

body waves-A body wave is a seismic wave that moves through the interior of the earth, as opposed to surface waves that travel near the earth's surface. P and S waves are body waves.

sorry if this doesnt help

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3 years ago

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Which of these are the two major sources of nitrate pollution in rivers?

nikklg [1K]

Answer:

The correct answer is c. animal wastes and fertilizers.

Explanation:

Two major sources of nitrate pollution are farming and breeding activities. There are also certain industrial activities involved in nitrate pollution, but in general, these industries are related to agriculture.

The indiscriminate use of fertilizers for several years in intensive productions produce high nitrate concentration in soil and consequently elevate the risk of nitrate lixiviation.

Breeding animals produce nitrate pollution by their wastes, which accumulate and are not treated. These wastes include flesh, hair, feathers, skin, fat, liquids, excrements, among others. These wastes are an important source of nitrate.

In many cases, animal wastes are used by farmers as organic matter to improve their production. But excessive and incorrect use of it might produce severe damage in water sources.

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3 years ago

A botanist has recently developed an enzyme called NoGro. This enzyme acts as an

Minchanka [31]

Answer:

results could be biased and therefore they are not reliable

Explanation:

A conflict of interest is generated when the authors of a given study have any type of interest that could influence their judgments, results and/or conclusions. These conflicts of interest include any relevant financial relationships, personal, religious, political or intellectual interests. To solve this situation, peer-reviewed, well-reputed journals generally include a conflict of interest statement where authors declare all interests that might be perceived as conflicting.

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3 years ago

Three-carbon molecules of PGA are converted to G3P small sugar molecules by _____, which come from the light reaction.

anyanavicka [17]

<h3>Answer;</h3>

ATP and NADPH

<h3>Explanation;</h3>

Three-carbon molecules of PGA are converted to G3P small sugar molecules by ATP and NADPH, which come from the light reaction.

Photosynthesis, a process in which green plants use energy from the sun to make their own food, involves two types of reactions, light reactions in light stage and light independent reactions in dark stage.

During the light reactions ATP and NADH are generated from the electron transport chains, which are then taken to the second stage (light independent stage) of photosynthesis. During the Light independent stage the energy stored in ATP and NADH is used to convert 3-carbon PGA to G3P.

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3 years ago

IQ scores have risen by how much each decade over the last fifty years?

Lostsunrise [7]

15 points is the answer
Hope this helps
Have a good day!

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3 years ago

HELP *20 POINTS* 8th grade science

HELP 20 POINTS 8th grade science