They are heavier because they absorbed the water.
        
             
        
        
        
Answer:
Biotic:
- Bear
- Moose
- Trees
- Eagle
- Bird
- Fish
- Ducks
- Otter
- Ferns
- Grass
- Butterfly
Abiotic:
Explanation:
Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.
Hope this helps.
 
        
             
        
        
        
Here's what I came up with:
1. Scavengers
2. Community
3. Parasitism
4. Competition
5. Food chain
6. Predator-prey
7. Dominant species
8. Population
9. Parasitism
10. Commensalism
11. Mutualism
12. Predator-prey
13. Decomposer 
14. Scavengers
15. Mutualism
16. Dominant species
17. Predator- prey
        
             
        
        
        
Rainforest cover only 2 % of the total surface area of the Earth but in spite of that about 50 % of plants and animals that live on the Earth live there.
By definition rainforests are forests that recieve high amounts of rainfall so you can actually find rainforests in Alaska for example (other examples: Canada, Asia, Africa, Latin and South-America)
About 1/4 of natural medicines are found in rainforests. 70 % or more of the plants that are used to treat cancer are found only in tropical rainforest on the planet. 
Trees in tropical rainforests are so dense that it takes approximately 10 min for the rainfall to reach the ground from canopy.