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ELEN [110]
3 years ago
5

Our middle aged sun is approximately how old

Biology
2 answers:
Misha Larkins [42]3 years ago
8 0
The Sun formed about 4.6 billion years<span> ago </span>
Mama L [17]3 years ago
6 0

Answer:

4.5 billion years ago

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Which of the following best describes the hydrolysis of carbohydrates
PIT_PIT [208]

Answer:

The addition of a water molecule breaks a covalent bond between sugar monomers

Explanation:

The digestion of carbohydrates by enzymes is an example of a hydrolysis reaction.

Carbohydrates are chains of monosaccharides. Hydrolysis involves the addition of a water molecule that cleaves the covalent bond between the molecules of sugar.

The reverse reaction is a condensation reaction, the joining of sugar monomers to create a carbohydrate releases a molecule of water.

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2 years ago
Consumers rely on other
kolezko [41]

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B. They cannot capture other organisms

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2 years ago
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The incidence of skin cancer has increased dramatically in parts of Australia where people are experiencing greater UV exposure
Marina86 [1]

Answer:

The correct answers are:

1. stratospheric ozone depletion

2. climate change

3. desertification/land degradation

4. freshwater decline

5. biodiversity loss.

Explanation:

1) Stratospheric ozone depletion- ozone layer is the protective layer around the earth that protects us from harmful rays such as UV rays coming from the sun. There are depletions or holes in the ozone layer in some parts of Australia and therefore, therefore leading to skin cancer.

2) climatic change - The change in the average temperature or precipitation of an area that takes place due to global warming that changes the earth's climate is changing rapidly.

3) desertification or land degradation - It occurs due to past overuse of fertilizer or barren land that has zero crop yield.

4 )freshwater decline - freshwater is an essential part of the irrigation of crops in agriculture and due to the downfall of groundwater its decline the freshwater produce in these parts.

5) biodiversity loss - Coral reefs are habitats for many aquatic organisms and used as various ways of biodiversity. If there is a loss or decrease in their numbers it will affect and decline the biodiversity of the area.

7 0
3 years ago
What is the starch indicator, and how does it change?
kow [346]

Answer:

<h3><em>Starch is a indicator in the iodometric titration and it turns deep dark blue when iodine is present in a solution. The starch under warming condition forms amylose and amylo pectins which combine with iodine to produce dark blue color.In absence of iodide ion starch indicator is colorless.</em></h3>

<em />

8 0
2 years ago
Guys! i need URGENT help!
zepelin [54]

Answer:

When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean’s pH (a measure of how acidic or basic the ocean is) drops. Even though the ocean is immense, enough carbon dioxide can have a major impact. In the past 200 years alone, ocean water has become 30 percent more acidic, faster than any known change in ocean chemistry in the last 50 million years.

Explanation:

7 0
3 years ago
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