Explanation:
The purines are ribose and deoxyribose
The correct answer is -
E. double coincidence of wants
<span>more consumers than producers</span>
The answer to this question is b syphillis because of cervical discharge
Darwin went to the continents of Africa and South America, wherein both of them have a tropical grassland/Savanna biome. The grasslands in these continents gave him a chance to notice that species do vary globally. He observed the similarities between the different large, flightless birds species–rheas, ostriches, and emu.
