Answer: Relatively less abundant water on land makes survival difficult for terrestrial animals. All four problems stem from a lack of water. Terrestrial animals spend energy looking for water, which is not available easily. Terrestrial temperature fluctuates widely, so energy investments have to be made to keep body temperatures regulated.
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Answer: Just did the lesson on this, the answer is  C.
Explanation:An allele is one of the possible forms of a gene. Most genes have two alleles, a dominant allele and a recessive allele. If an organism is heterozygous for that trait, or possesses one of each allele, then the dominant trait is expressed. ... So a gene is a particular region of your DNA that controls a specific trait.
 
        
             
        
        
        
Answer: 
(B) Reduce his calorie intake to achieve a healthy weight
Explanation:
Research has shown that excess body fat or obesity increases the risk of cancer, since timothy is overweight, he needs to reduce his calorie intake to achieve a healthy weight
 
        
             
        
        
        
Answer:
c let me know if i am wrong
Explanation: