Answer:
A:They were helpful
Explanation:
It says"This succeeded admirably; for in a short time we understood them and they us both by gesture and signs and words; and they were of great service to us".
Answer:
The sample contains protein.
Explanation:
Biuret test is a test used to determine or assay for proteins in a solution. When the biuret reagent is added to a solution and it turns blue after 2 minutes, it means that the solution contains protein.
Benedict’s test is used to determine the presence of sugar (reducing sugar) in a solution. When it turns brick red, it means there is the presence of reducing sugar in large quantity.
From the question, since the solution turned blue on addition of Biuret reagent and was also blue on addition of Benedict’s reagent (the reagent is usually blue), it means that the solution contained just proteins excluding reducing sugars.
Answer:
The Serengeti known for its huge herds of plains animals (especially gnu wildebeests, gazelles, and zebras), and it is the only place in Africa where vast land-animal migrations still take place. The climate there is subtropical, with a dry and relatively cool season from May to August, a warmer and still quite dry season in September and October, and a rainy and pretty hot season from November to April. Topographically, the ecoregion is made of flat to slightly moving grassy plains, disrupted by scattered rocky areas which are parts of the Precambrian foundation rocks sticking out through the ash layers.
Explanation:
I hope this helps you!
