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sergiy2304 [10]
3 years ago
10

Ph paper used to identify if a substance is acidic or basic was previously derived from organisms called lichens. what is the si

gnificance of natural indicators
Biology
1 answer:
ValentinkaMS [17]3 years ago
3 0
Natural indicators are important because they relate information about the acidity or alkalinity of a substance by demonstrating a shift in color which inform  the observer about the pH level of the concerned material.
Natural indicators possess useful chemicals which relate information about pH level and because of this they are used in manufacturing of chemical indicators.<span />
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Crossing over occurs during which phase of meiosis
grandymaker [24]

prophase

Further genetic variation comes from crossing over, which may occur during prophase I of meiosis. In prophase I of meiosis, the replicated homologous pair of chromosomes comes together in the process called synapsis, and sections of the chromosomes are exchanged.

Hope it helps!

4 0
3 years ago
What is the nature of the majority of the water on Earth?
kvv77 [185]

Answer:

D: salty

Explanation:

The Majority of the earth is made of the ocean

i'm not sure this is correct tho

7 0
3 years ago
Read 2 more answers
A student creates a list of characteristics for a human cell and a virus. 1. smaller than an organelle 2. absence of metabolic a
Amiraneli [1.4K]

Answer:

1, 2, and 5

Explanation:

Viruses are pathogenic microorganisms that lack the ability to thrive and reproduce outside of a living host cell. Their structure is simple - they consist of a nucleic acid molecule surrounded by a protein coating and sometimes an outer envelope. They are too small to be seen by a light microscope.

As they are way smaller than living cells, viruses are smaller than organelles as well. They don't have their own metabolism. Their reproduction is not based on division. They don't have any organelles, including the cytoplasm. They are surrounded by a protein coat called the capsid.

Based on this information, we can see that the correct statements are statements 1, 2, and 5.

4 0
3 years ago
How do autotrophs get nutrition?
ANTONII [103]

Answer:

B. By taking in inorganic substances

Explanation:

When you think of autotrophs, you may think of plants, and how do plants get nutrition?

By taking in inorganic substances like carbon dioxide or sunlight, then converting it into energy.

8 0
3 years ago
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Why do some streams and rivers cause more erosion and deposition than others?
uranmaximum [27]
Because water can dent things. You seen the movie 2012? Think of the aftermath. Think about japan. The canyons had to do with something about water
5 0
3 years ago
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