The correct answer is d. both excitation and inhibition.
There is a process which is called summation and it refers to the process that determines whether or not an action potential (on postsynaptic neuron) will be generated by the combined effects of excitatory and inhibitory signals (from the presynaptic neurons). Depending on the sum total of inputs, summation may or may not reach the threshold voltage to trigger an action potential (firing of postsynaptic potential).
 
        
             
        
        
        
Answer:
selective interference
  
Explanation:
Natural selection acts on genes that are inherited together, which is the case for species of asexual reproduction (where genes are inherited together by clonal offspring).  In asexual species, linkage disequilibrium (i.e., non-random association of the alleles of different <em>loci</em>), can be understood in a similar mode in terms of population allele frequencies. Selective interference underlies the association between beneficial mutations and surrounding sites which are subject to deleterious mutations. It has been shown that asexual species adapt at a slower rate than species of sexual reproduction. In sexual species, selective interference could be bypassed through the mechanism of recombination during meiosis (although there is not conclusive evidence of this). In asexual species, different deleterious and beneficial mutations are generally fixed, whereas beneficial mutations are generally spread and fixed in species of sexual reproduction.
 
        
             
        
        
        
Answer:
D
explaination:
rainfalls can predict the habitat like rainforest and deserts. the amount of sunlight can predict how the species sleep and hunt. and temperatures can predict how animals adapt in hot or cold areas
 
        
             
        
        
        
<span>the answer would be  </span>B. riding a bike since all the others produce greenhouse gasses