Tamiahufflululu
28.10.2019 •
Biology
Differences between dna and rna include all of the following, except that
a. thymine is a base in dna, uracil is a base in rna.
b. rna consists of just one polynucleotide chain, dna consists of two chains.
c. dna uses the information in rna to assemble the correct amino acids and make proteins.
d. all of the above are correct.
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Ответ:
Ответ:
This is true. The balance of such abiotic factors as water, temperature, light and air composition are crucial to any ecosystem.
Water- all living beings, whether they are plants or animals need a definite percentage of water to live and remain healthy. Water bodies of the world have more life forms present in them than found on land.
Temperature- All plant and animals are adapted to survive between a minimum and maximum range of temperature. Distribution of different temperatures in different zones enable a wide diversity of both plant and animal life to flourish.
Light- This is the main source of energy for organisms. Most plants use light energy and transform it into chemical energy in form of complex materials that are the lifeline of animals. Animals directly or indirectly depend on plants for life.
Chemical components.- Carbon, oxygen, hydrogen and nitrogen are elements that constitute 97% of the molecules of life. A balanced supply of the elements either from the air in atmosphere or other sources is vital to life of living beings.