Educate your family about endangered species in your area. 
Recycle and buy sustainable products. 
Recycle and buy sustainable products. 
Reduce your water consumption.
Volunteer. If you don't have money to give, donate your time
 
        
             
        
        
        
Answer: Homologous structures
Explanation: They are structures which have similarities in various organisms but carry out opposite functions. This is the opposite of analogous structures
 
        
             
        
        
        
Answer:
ADVANTAGES:
Bacteria are involved in production of many food products such as yogurt, cheese, pickles, etc.
Bacteria break down waste material so that our environment is not permanently cluttered with garbage, dead bodies, etc.
Bacteria are responsible for the production of important essential compounds that are necessary for life such as vitamin K production by E. coli in the gut
DISADVANTAGES:
Some bacteria cause infections or produce toxic substances that are a threat to life and/or health.
Bacteria cause spoiling of food so that it does not keep as long as we may desire.
Some bacteria may cause infections of plants, threatening our food supply or ornamental plant.
 
        
             
        
        
        
Answer:
an entire desert, including abiotic and biotic factors
Explanation:
A ecosystem is a place where living things live.
Hope this helps <3
 
        
                    
             
        
        
        
<h2>Answer:</h2>
This means the dolphin is an vertebrate.
<h3>Explanation:</h3>
- Gill pouches are the structures which are present in all vertebrates in the embryonic stages while it is present in fishes and amphibian in later life also.
- It is thought to be the ancestral structures present in vertebrates. These pouches are then converted to lungs in the later life. For the water animals they are used for respiration.
- They are actually the muscular walls containing respiratory lamellae on its inner side.
- Hence in dolphin they are signs that dolphin is an vertebrate.