Soil erosion causing land to become barren due to lack of vegetation holding the soil together ^^; i guess
It’s c it’s a process in which plants releases water through their leaves back into the air
Answer:
90yrs
Explanation:
Half life is the time taken for half of an original radioactive material to decay by half.
For the sample;
Half - life = 45yrs
Original amount = 600cpm
Start Number of atoms
0yrs 600cpm
First half life
45yrs 300cpm
Second half life
90yrs 150cpm
A mixture could be for example sand and water , it could be separated using filter paper. When the sand and water are poured through the filter paper they separate