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tatiyna
3 years ago
9

Please answer! Earth science.

Biology
1 answer:
kramer3 years ago
5 0
An inference is a conclusion reached on the basis of evidence and reasoning.

I believe the answer is (1) the sunset time will continue as an annual cycle. It's an inference based on his observations and the data taken.
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What did Virchow observe that led him to determine one of the main components of cell theory?
mr Goodwill [35]

Answer:

a cell splitting into two cells

Explanation:

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3 years ago
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Help!
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answer.

A horticulturist (plant scientist) complains to the city that a nearby residence is ruining his flowers because of the detergent being used to wash their cars. The soap runs into a stream that goes near his flower beds. As an inquiring scientist, you want to find out whether soap can affect flower growth. You will need to set up your experiment (using the animation below) and publish your findings (see questions below). Write your hypothesis (should be in a complete sentence and describe what exactly is being tested)

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An experiment is designed so that you can observe the differences between
ludmilkaskok [199]

Control group

Explanation:

Experiments are usually designed so that the differences between the experiment and control groups can be observed.

  • The experimental group is the group that follows the details of the hypothesis where variables are changed to see their causes and effects.
  • The control group is the standard by which the experimental group is compared with.
  • The variables are being tested for in the experimental group to see how they are changing .

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3 0
3 years ago
Which is composed of amino acids and determines all the structures and functions of organisms?
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D. Proteins are composed of amino acids and determines all the structures and functions of the organism.
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Place the events in the correct order:
Alecsey [184]

Answer:

1. Chromatin condense into chromosomes.

4. Homologous chromosomes pair up (formation of tetrads).

5. Homologous chromosomes separate and move to poles.

2. Sister chromatids separate.

3. Chromosomes unravel in to chromatin.

Explanation:

This question portrays the process of meiosis in a cell. The ordered sequence of events in the options are:

1. Chromatin condense into chromosomes - This process occurs in the Prophase stage. Prior to the cell division, the nuclear material is found as Chromatin material. This Chromatin material then undergoes condensation to form visible chromosomes.

4. Homologous chromosomes pair up (formation of tetrads) - This process also occurs during the Prophase stage of meiosis I. In this stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) are paired up side by side to form a structure known as TETRAD or BIVALENT.

5. Homologous chromosomes separate and move to poles - This process characterizes the Anaphase stage of meiosis I. Homologous chromosomes are pulled apart to opposite poles of the cell by spindle microtubules.

2. Sister chromatids separate - After meiosis I, meiosis II involving sister chromatids instead of homologous chromosomes follows. In the Anaphase stage of meiosis II specifically, sister chromatids are pulled apart towards opposite poles of the cell.

3. Chromosomes unravel in to chromatin - After the whole division process i.e. karyokinesis (division of the nuclear material), the chromosomes begin to unravel to form the CHROMATIN threads once again. This process occurs in the Telophase stage of meiosis.

5 0
3 years ago
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