Answer:
Cyanobacteria are microscopic organisms found in all kinds of water. They are single-celled organisms and produce their own food from sunlight via photosynthesis. Cyanobacteria are important to evolution because they developed the oxygen atmosphere we live in by producing waste from cyanobacteria. Plants also evolved from Cyanobacteria.
 
        
             
        
        
        
A I believe because cars produce a lot of gas contributing to global warming
        
             
        
        
        
The tonsils blind ended structure is called crypts.
        
                    
             
        
        
        
Insect hormones and their receptors are a focus in pest control and research. Hence, Option B is correct.
Some of the insect hormones such as ecdysone (molting hormone), JH (juvenile hormone) and their analogs can be used for biological  control of pests. 
Option A: Hormone receptors are proteins that bind hormones and form hormone receptor complex to maintain cellular activities. 
So Option A is incorrect. 
Option B: Some of the peptide hormones used in pest control and research. So Option B is correct.
Option C: Peptide hormones interact with only cell surface whereas aminoacid derivatives and thyroid hormones directly interact with nucleus. so Option C is incorrect.
option D is incorrect.
Learn more on hormone receptor complex here:
brainly.com/question/15241630?utm_source=android&utm_medium=share&utm_campaign=question
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Answer:
B
Explanation:
They altered rocks into soil that was able to support simple plants such as grasses. This is an example of altering the environment around them to make it more habitable for other species.