Answer:To test whether iodine or starch have crossed the synthetic membrane, you will look for a change in color. A solution of iodine is tan and a solution of starch is clear or milky white; when iodine and starch are together in the same solution, the solution is purple, dark blue or black.
Explanation:
Both the pelvis and femur of a whale are called vestigial structures! Another example of this is a human’s tail bone. Hope this helped!
Answer:
Sun
Explanation:
The main source of energy of energy for most organisms and the ecosystems. For example, producers, such as flowers and trees, use sunlight to go through photosynthesis.
Only autotrophs can convert solar energy into chemical energy
