Answer:
Arthropods invaded land about 100 million years before vertebrates. This fact most clearly implies that a. arthropods have had more time to co-evolve with land plants than have vertebrates
Explanation:
Arthropods are invertebrates animals. Its evolutionary ancestry dates back to the Cambrian period and they have had more time to co-evolve with land plants than have vertebrates. The vertebrates share a common ancestor. Scientists believe that the last common ancestor of all arthropods is a modular organism with each module covered by its own sclerite.
 
        
             
        
        
        
The pH level of a cleaning product can vary depending on what you need. However, the most products would have a pH higher than 7 because anything above 7 will not be acidic but basic. Basic products tend to be more effective when cleaning.
        
             
        
        
        
Farmers should discontinue the use of Bt corn (genetically modified maize)as their negative affects on the health of the consumers have not been fully over ruled by the recent research. In my opinion, genetically modified crops, although, are resistant to various pests, should not be encouraged because of the toxic chemical contents used during their production. There's a strong likelihood of these toxic chemicals entering our food chain and also being harmful to other naturally growing plants, hence there's a need for more research before this idea is pursued. 
        
                    
             
        
        
        
Answer:
Second!
Explanation:
speed and velocity are both measured using the same units.The S.I unit of distance and displacement is the meter. The S.I unit of time is the second. The S.I unit of speed and velocity is the ratio of two-the meter per second!
I hope it's helpful!