I need help with these

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?