In some forests are cleared by burning .This produces carbon dioxide and ash. (a) Outline the environment effects of am increase in carbon dioxide in the atmosphere as a result of burning forests.

(b) The ash helps crops to grow bcuz it is rich in minerals, such as magnesium ions ,but it is deficient in nitrate ions.

Explain why nitrate ions and and magnesium ions are important for plants.
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The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.