If you add the two lengths on the left, you can figure out that one side is 100 units and the base is 50. In the smaller triangle, the ratio of base length to side length should be the same. If the big triangle is 50:100, then the small triangles base should be 1/2 it’s side. 1/2 of 60 is...
30 units
Hope this helps :)
1. lifeless
2. evaporation
3. seeps into
4. surface, pycnocline, deep
5. food web
6. photic
