Answer:
The two natural factors are.
Rainfall and river
The two man made factors are
Canal and tube wells
LOTIC ECOSYSTEMS, CONSISTING OF RIVERS AND MAINSTREAMS, FREE-FLOWING WATER.
Answer:
Yes, it is safe to use HE detergent in a normal top-loader washing machine.From Tide.com: "Our HE detergent is designed especially for HE washing machines - both front and top loading. If you have a non-HE washing machine (which is usually top-loading only), you can use HE detergentbut it's not necessary. It won't harm the machine but you'll notice less suds."
Explanation:
The crust is the part you walk on, and it's the surface of the earth.
