1. They have a slimy skin in which the oxygen gets dissolved. 2. The frog have lung instead of gills 3. They have enormous no. of nerves which help them to breathe through skin
the answer is b) shoppers no longer need to leave the house or spend hours at the mall to make a purchase
Answer:
B
Explanation:
An ecosystem can contain many habitat.
Answer:
Alleles occur in pairs because chromosomes come in pairs for each trait, there will be two possible alleles. These different versions of genes (alleles) occur as the DNA base sequence is different. This combination of alleles for each trait is called the genotype; this can be any combination of two of the available alleles.
