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dalvyx [7]
3 years ago
7

Properties of elements within a blank on the periodic table change in a predicatable way from one side of the table to the other

Chemistry
1 answer:
Vitek1552 [10]3 years ago
7 0

Answer: oxygen

Explanation:

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jeka94

Answer:

A. transport

Explanation:

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8 0
3 years ago
What is irrigation?Describe two methods of irrigation which conserve water​
MA_775_DIABLO [31]

The process of watering the crops is called irrigation.

Any two methods of irrigation are:

<h3>(i) Sprinkler system:</h3>

This system is used on the uneven land where less water is available. The perpendicular pipes, having rotating nozzles on top, are joined to the main pipeline at regular intervals. Water is allowed to flow through main pipe under pressure, which escapes from the rotating nozzles. In this way water gets sprinkled on the crop.

<h3> (ii) Drip irrigation:</h3>

This system is used to save water as it allows the water to flow drop by drop at the roots of the plants. It is the best technique for watering fruit plants, gardens and trees. Water is not wasted at all.

5 0
3 years ago
Which molucules are pure elements?
IrinaK [193]
None, because molecules are a group of two (or more) electrically bonded atoms. But there are gases not bonded due to their stability.
6 0
3 years ago
Which type of interaction does NOT contribute to the stabilization of the tertiary structure of a protein? a.Disulfide bond b.Ph
amm1812

Answer:

Option b, Phosphodiester bond

Explanation:

Proteins are sequence of amino acids. Two amino acids are joined by peptide  bond. Therefore, proteins are also known as sequence of polypeptide chains.  These polypeptides chains have four level of structures:

Primary structure

secondary structure

Tertiary structure

Quaternary structure

Primary structure is simply a sequence of amino acids. In secondary, tertiary and Quaternary structure, various interactions are present.

Disulfide bond, hydrogen bond and salt bridge stabilizes tertiary structure of the protein.

Phosphodiester bond is present as link between two nucleotides and thus, present in the backbone of nucleic acid (RNA and DNA)

Therefore, the correct option is option b

8 0
3 years ago
Does anyone know what minerals were in the identifying a mineral project or how to fix this problem?
nadezda [96]

Answer: are you in times4learning?

Explanation:

8 0
2 years ago
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