MCQ
This adaptation is shown in desert organism.
- ✓Concentrate urine
- BDilute urine
- CMaximize water loss
- DOn upper surface high stomata numbers.
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$(A)$ The earliest organisms that appeared on the earth were nongreen and presumably anaerobes.
$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.Of the above statements which one of the following options is correct?