What are the producers and consumers in an ecosystem?

An example of a producer is a tree. A producer makes food for themselves and produces other things for other species. And in this case, a tree makes its own food.

An example of a consumer is a lion. A consumer is a species that feeds on other prey or organisms. In this case, a lion doesn't produce its own food but feeds on other prey and organisms.

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answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.