Industry 
Cars
Fuel burning
Use of chlorofluorocarbons
        
             
        
        
        
<h2>
Biennial plants</h2>
Explanation:
This plant is a biennial, which means it will just take longer than a season to mature enough to produce flowers.
Since the Sweet William  plant did not flower last year when it was planted and this year also it did not bud till the spring. So, we can assume that these plant will need atleast two seasons to mature hence they are biennials. 
Depending on the life span, plants are classified as annuals (one season), biennials(two season) and perennials (more than two years).
 
        
        
        
Answer:
1. True
2. True
3. False, they have 46
4. False, they inherit traits from both parents
5. True
6. False, rice has 12 pairs of chromsomes and flies have 4 so not all orangisms have the same number of chromosomes
7. True (not too confident with this one though)
8. False, a body cell has 46 while gametes have 23
9. False
10. True
Explanation:
 
        
             
        
        
        
Because there is little leaching.