How did the use of lead shot by hunters lead to the poisoning of wildfowl?
What will be an ideal response?
ANS:A
few years ago, it was discovered that the lead shot that is used in shotgun shells was killing
waterfowl long after the hunting season was over. Waterfowl do not know the difference between lead
shot and the small rocks they must eat to grind the seeds and plant materials that make up their food.
When lead shot is eaten, it is gradually absorbed into the body, causing lead poisoning to occur.
Eventually, it causes the death of the affected birds. Simply replacing lead shot with steel shot
eliminates this problem.
You might also like to view...
In a stone-honeycomb wall cladding panel, the thickness of the stone is approximately _________.
A) 1/4 in. B) 1 in. C) 3/4 in. D) 1/2 in. E) 1/8 in.
Which materials are commonly used for cladding wood windows? What is the purpose of cladding, and which parts of a window are clad? Explain how the cladding helps to secure a window to the opening.
What will be an ideal response?
For compacting soil in trenches, an effective tool is the _____.
a. rubber-tired roller b. vibrating-plate compactor c. smooth steel-wheeled roller d. segmented pad roller
How is sex determined in a scorpion?
What will be an ideal response?