It shows that a scientist can be creative because they used the fish's coughing technique to search for contaminated water.
The chemical substance in adult male pig's urine, which can also be found in other mammals, is called Puberty Accelerating Pheromone. It is also found in boar's saliva, and was said to be responsible in inducing early puberty in young female piglets.
Answer:

Plasmodesmata play roles in both cellular communication and in molecule translocation. Plant cells must work together as part of a multicellular organism (the plant); in other words, the individual cells must work to benefit the common good. Therefore, communication between cells is crucial for plant survival.
Biosphere- protect habitats
Atmosphere- reduce auto emissions
Hydrosphere- reduce,reuse,recycle
Geosphere- limit fertilizer