Ans. False.
Coral reefs can be defined as underwater ecosystems, characterized by coral (marine invertebrates) skeletons. Coral reefs can survive only in clean and clear water. Pollutants and sediments smother the coral reefs, reduce water quality, and enhance the growth of damaging algae.
Pollution also makes coral reefs to become susceptible for disease, which impede growth and reproduction of corals, and cause damage to coral reefs.
Thus, the given statement is false as coral reefs are affected by pollution.
The correct order is: B) 2, 5, 4, 3, 1.
2. A segment of DNA is transcribed in mRNA. mRNA is transferred to the cytoplasm. This is the process of transcription that occurs in the nucleus of the cell and it is the first step of gene expression. It is performed by the enzyme RNA polymerase.
5. The mRNA strand is fed through the ribosome. Ribosome is an organelle where protein synthesis (translation) occurs and it consists of proteins and RNAs.
4. Molecule of tRNA delivers amino acids from to the ribosome. tRNA is transfer RNA because of its function to carry amino acids to the ribosomes during protein synthesis.
3.The amino acids are dropped off at the ribosome.
1. The amino acids are joined to make a protein. Amino acids are added to a growing protein chain.
<h3><u>Answer</u>;</h3>
D. reproduce and increase the frequency of their genes in the population
<h3><u>Explanation;</u></h3>
- Natural selection refers to the process that occurs naturally by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment.
- <em><u>For example, a prey population consists of individuals with a variety of running speeds, will be better adapted to the environment as they will be able to run away from their predators and hence reproduce and increase the frequency of their genes in the population.</u></em>
Two examples of environments that include more than one sphere:
A Tundra: Cryosphere and Geosphere
A Desert: Biosphere and Geosphere
Hope this helps you and if it doesn't then i'm sorry. :>
