Answer:
Atoms are made up of particles called protons, neutrons, and electrons, which are ... Within the main group elements ( Groups 1-2, 13-18), there are some general ... (via loss of electrons), the ion is positively charged and is called a cation.
Explanation:
 
        
             
        
        
        
Answer:
It occurs in the body in any of the cells except the germ cells. Thus, they are not passed on to children. These are caused by the environmental factors, such as exposure to ultraviolet radiation or to certain chemicals
Explanation:
 
        
             
        
        
        
Organisms compete for the resources they need to survive- air, water, food, and space. In areas where these are sufficient, organisms live in comfortable co-existence, and in areas where resources are abundant, the ecosystem boasts high species richness.
        
             
        
        
        
Answer:
Plants produce oxygen gas and glucose molecule during the process of photosynthesis by absorbing radiation of the sun. 
Explanation:
Photosynthesis is a process in which glucose and oxygen are produced by the combination of carbondioxide and water in the presence of sunlight. Carbondioxode is taken in the leaves through stomata and water is absorbed by the plant from the soil. When these two substances combine in the presence of sunlight produces glucose and oxygen. 
 
        
             
        
        
        
Answer:
 q = 0.42
Explanation:
This question is an example of Hardy-Weinberg question and there are two equations necessary to carry out this question;
p + q = 1
p² + 2pq + q²  = 1
where;
p =  the frequency of the dominant allele
q =  the frequency of the recessive allele
p² = the frequency of individuals with homozygous dominant genotype
2pq  = the frequency of individuals with heterozygous genotype
 q² = frequency of individuals with the homozygous recessive genotype
Since the total  population = 425
 q² = 
= 
 q² = 0.1765             
 To find q; we need to square root both side to           eliminate the square from  q².
∴  
 
 q = 0.4201 
 q = 0.42       (to two decimal places)