Chemical weathering and mechanical weathering can be influenced by plants. Plants contribute to mechanical weathering when their roots growth through cracks and crevasses in soil or rock. Overtime the roots will break rocks apart. Some plants produce and secrete organic acids that can change the chemical composition of rocks causing them to weather. Mechanical weathering breaks rocks into smaller pieces while chemical weathering changes the composition of the rocks.
Answer:
1 2 4 3
Explanation:
1 2 and 4 go and then 3 leaks through after
Answer:
1384.83 miles .
Explanation:
1 .
Conversion of kilometer to mile ,
1 kilometer is equal to 0.621 mile ,
The lower mantle is 2230 km can be converted to miles , by simply multiplying by the value 0.621 .
Hence ,
the conversion is done as follows ,
2 .
Lower mantle = 2230 km = 2230 * 0.621 = 1384.83 miles
hence , the value of lower mantle is 2230 km and in terms of mile is equal to 1384.83 miles .
Answer:
- $60
- 103 sales
Explanation:
1. The sweater was originally priced at $80 and then got marked down by 25%. The new price is;
= 80 * ( 1 - 25%)
= 80 * 0.75
= $60
2. Terry earns a basic salary of $250 plus $5 per sale. To make a total of $765, from sales commission alone Terry must make;
= 765 - 250
= $515
Sales to make = 515/5
= 103 sales
