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Lady bird [3.3K]
3 years ago
6

A student reported that a limp stalk of celery became crisp when placed in ice water

Biology
2 answers:
brilliants [131]3 years ago
7 0

Yes, you are right. A student reported that a limp stalk of celery became crisp when placed in ice water. This is an example of an observation.

Observation is the process of actively acquiring information from a source of study. When the observation is collected using the senses, it becomes an empirical evidence. However observations are also scientifically recorded using various scientific instruments for precision and accuracy. Example, use of thermometer to record the room temperature.

Anna71 [15]3 years ago
7 0

The answer is definitely "<u>AN OBSERVATION"</u> I just completed the lesson so I know for sure that this is the correct answer. Hope I helped!

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HELP!!! Decomposers are not shown on the food web above. Explain how
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Read 2 more answers
Arrange according from largest to smallest in size:
Inessa [10]

Answer:

The correct answer is "Redwood tree; human being; Paramecium; White Blood Cell; Escherichia coli; Chickenpox virus; Ribosome; Prion fibril; Water molecule; Sulfur atom".

Explanation:

Redwood trees are gigantic trees, and its size can reach up to 90 meters.

The average size of a human being is 1.7 meters for males and 1.6 meters for females.

Paramecium are members of the protozoa genus, among the largest unicellular algae. Its average size is among 50 to 330 micrometers.

White Blood Cell are up to 17 micrometers in diameter.

Escherichia coli is a type of bacteria, as a prokaryotic organism is much more smaller than a eukaryotic cell such asa the white blood cell. Escherichia coli is up to 2 micrometers in diameter.

Chickenpox virus are among the largest viruses, they are from 150 to 200 nanometers in diameter.

Ribosomes vary on size depending if they are Prokaryotic or Eukaryotic, where the first are up to 20 nanometers and the second are up to 30 nanometers.

Prion fibrils are aggregates comprised of several protein units. It size varies depending on the number of proteins, but the ones containing around 200 units can reach up to 27 nanometers.

Water molecule is comprised of two atoms of oxygen and one atom of hydrogen, its size is measured with picometers (1 picometer is equal to 1000 nanometers). A water molecule has a size of 275 picometers.

Sulfur atom is the smallest in the list. Its size is around 100 picometers.

6 0
3 years ago
Denitrifying bacteria _____.
Dvinal [7]

Answer:

make protines

Explanation:

3 0
3 years ago
Bees see the colors yellow and blue, but not red. Flowers that need to be pollinated by bees are mostly yellow of blue. What typ
Inga [223]

Answer:

Natural Selection

Explanation:

In natural selection process of evolution, traits that are essential for an individual to be fit enough to survive under environmental stress become dominant.

Since the flowers are of blue or yellow color, it is essential for a bee to be able enough to perceive the blue and yellow color. Hence, the eyes of bee with time have evolved to perceive these two color so that they can pollinate flower.

5 0
3 years ago
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