Gregory is studying Lake Mairead. The lake has clear water and supports a healthy community of algae, fishes, and other aquatic organisms. Gregory hypothesizes that phosphorus is a limiting nutrient in the lake. Which experimental result provides the strongest evidence in support of the hypothesis?

A. Filtering and removing phosphorus from a sample of lake water causes an increase in the growth of algae in the sample.
B. Adding phosphorus-rich fertilizer to a sample of lake water causes no observable effect.
C. Adding phosphorus-rich fertilizer to a sample of lake water causes an increase in the growth of algae.
D. Measurements show that phosphorus is more concentrated in bottom sediments than in the lake water.

if you know your abc's you should be able to get your answer or just use google

it's c.us forest service

1. is geographic distribution

2 is increasing complexity

3 is transitional forms

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.