Answer:
<em>1. They effect crop productivity</em>
As weeds start to grow in the area where the crops were destined to grow, the production of the crops gets lowered.
<em>2. They deplete the crops from nutrition</em>
The weeds will compete with the crop plants for resources such as minerals from the soil.
<em>3. They will deplete water resources</em>
The weeds will compete with the crop plants for water.
<em>4. Sun-light will be depleted</em>
The weeds will complete with the crop plants for sun light.
<em>5. The crop quality will be affected</em>
As the crop plants will be in competition with the weeds, hence their quality will be affected.
6.  <em>They can reduce the biodiversity of crop plants.</em>
 
        
             
        
        
        
Answer:
Many flowering plants have very colorful petals like the lily seen here. What is the main purpose of these colorful petals? A) to protect the plant from predators Eliminate B) to capture sunlight for photosynthesis C) to distract birds from eating the seeds D) to attract insects that pollinate the flower.
Explanation:
 
        
             
        
        
        
Amino acids are the building units of proteins
        
                    
             
        
        
        
Answer:
The vertebral region is superior to the sacral region
Explanation:
Superior meaning toward the head of the body, or looking down on sacral region below
 
        
             
        
        
        
They Grab Information to gain Hypothesis , Then test it to get the Scientifical Answer for the problem.
Hope this helps... If not, correct me...