Answer:
d
Explanation:
I don't know, I'm just assuming
 
        
             
        
        
        
Human chorionic gonadotropin (hCG) is secrete by the embryo early in pregnancy to keep the corpus luteum for dying. This positive feedback will maintain the corpus luteum, which secretes Progesterone and Estrogens throughout pregnancy, in order to keep the endometrium well to nourish the embryo/fetus.
        
             
        
        
        
F. b and c only the Sun is closer to the horizon <span> the Sun’s light is spread and diluted more</span>
        
             
        
        
        
The correct answer is B
The genetic codes language in all living organisms is the same. This is to say that the molecules of life namely DNA and RNA share the same make up in all living things .
There are five types of nucleotides in nature which are the building blocks of RNA and DNA and these are the same in all living organisms . These nucleotides are Adenine, Thymine, Guanine, Cytosine and Uracil.
According to base pairing rules, in all DNA molecules Adenine will always pair with Thymine while Guanine will always pair with Cytosine. 
This  rule is the same with RNA except that here Thymine is replaced with Uracil.  Otherwise the base pairing rule applies in all living organisms, that is to say it is universal.
  
 
        
             
        
        
        
Your digestive system breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair.