1. X axis - type of sound; y axis - sound level (decibels)
2. whisper - 20 decibels; normal talking - 60 decibels; rock concert - 120 decibels
3. Normal talking is 40 decibels more intense. You can figure this out by subtracting the decibels of whispering from the decibels of normal talking (60-20)
4. The pain threshold is 120 decibels. This means the jet sounds could be painful because it is 140 decibels, or higher than the threshold.
I think its B if I'm not correct I'm sorry
And get a A+ on the assessment :D
The DNA structure is modified by the replacement of DNA base by amino acid. Thus, the protein formation process by amino acids also gets affected.
<u>Explanation:</u>
- The sequence of DNA bases determines the DNA structure.
- The change in the coding of DNA bases due to amino acids results in a change of both the number of bases and amino acids in the gene which may alter the protein building.
- These changes may occur in different ways such as addition, deletion or substitution of DNA base with an amino acid.
Answer:
Organisms need water for the following activities: (1) All cellular processes occur due to water. (2) Transportation of substances in our body takes place by dissolving in water. (3) Terrestrial animals require fresh water for transportation of minerals and for getting rid of waste from their body.
Explanation:
Without water they cant do any of this.
B. the fact that they breed plutonium when U-238 is converted to Pu-239