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Ludmilka [50]
3 years ago
8

What action by a nurse researcher will help eliminate bias on the dependent variable?

Biology
1 answer:
Artyom0805 [142]3 years ago
3 0
Making sure the participants in the study fit the criteria.
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2 a) What biotic factors affect the earthworm ​
OLEGan [10]

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What biotic factors affect the earthworm ?

Biotic factors that affect earthworm include predator, food, e.t.c

Explanation:

Biotic factors are factors that are inclined with living organism

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A coral reef is a complex ______ of calcium carbonate shells that are home to microbes, algae, invertebrates, and fishes, and it
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A coral reef is a complex [ecosystem] of calcium carbonate shells that are home to microbes, algae, invertebrates, and fishes, and its high productivity helps provide great species richness.
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1 year ago
Explain why using different seed types along with different water temperatures is an improper experimental design.
Darya [45]

Answer:

Because each subject in an experiment has to have equal conditions to ensure the most accurate results. And water temperature is known to impact plant growth. An experiment using different water temperatures is a terribly inaccurate experiment.

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3 years ago
Rock B reacts with hydrochloric acid. State the name of the rock B
choli [55]

Answer:

The sedimentary rock limestone which contains carbonate mineral Calcite and the metamorphic rocks which contain carbonate mineral Aragonite are the examples of rocks which react strongly with hydrochloric acid.

Explanation:

Rocks are naturally occurring structures formed on the Earth's crust and are composed of aggregate minerals. Classification of rocks: Igneous rocks - formed by cooling of magma on Earth's crust or seabed (basalts, gabbros, granite, etc), sedimentary rocks - formed over time by the accumulation of sediments from the weathering of existing rocks or fragments of minerals and organisms (mudstone, sandstone, shale, limestone, dolostone, siltstone, etc) and metamorphic rocks - transformed rocks formed from the existing rocks that are subjected to large pressures and temperatures (schists, gneiss, marble, etc).

The carbonate minerals like calcite, dolomite, aragonite, etc react with hydrochloric acid and release carbon dioxide gas bubbles. Calcite (calcium carbonate), which is found in igneous, metamorphic, and sedimentary rocks in a varying proportion reacts strongly with hydrochloric acid. So, the sedimentary rock Limestone which mainly contains calcite react strongly with the acid while Dolostone which mainly contains dolomite (calcium magnesium carbonate) reacts less vigorously. Another carbonate mineral aragonite, found in metamorphic rocks also reacts strongly with hydrochloric acid.

6 0
3 years ago
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