Answer:
water shortages, flooding and poor water
Explanation:
Up to 80% of illnesses in the developing world are linked to inadequate water and sanitation. In many countries, pollution or rising sea levels are contaminating trusted water sources
The primary reason why Jamestown was taken over by the British government in 1624 is because "<span>There had been too much death and conflict with the American Indians" although it also had to do with internal conflicts</span>
Breaking down "nature of this covenant"...
<em>Nature</em> refers to the characteristics of the covenant
A<em> covenant </em>is an agreement, sort of like an informal contract
While you didn't provide us with Chapter 19, versus 5 and 6, reading the rest of the question it can be inferred God is telling the Israelites to "keep his covenant."
To answer the question "What is the nature of this covenant?" read the chapter and ask yourself the following questions:
Is God stern with the Israelites? Helpful? Angry? Happy? Does He feel bad for them? Does He take pity on them? Are they loyal to God?
Does God get more out of the covenant than the Israelites do? Who does the covenant benefit more?
How do the Israelites feel about the covenant? How do they feel about their current situation in general? Does the convenant calm them? Inspire them?