Answer:
To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down.
Explanation:
Climate change represents a negative impact of technology. Technology can release harmful pollutants into the air such as greenhouse gases that cause climate change.
Mitosis:
a)2 diploid cells
b)one replication
c)1 division
d)no tetrads
e)diploid has full set of genetic information while haploid has only half
Meiosis:
a)4 haploid cells
b)one replication
c)2 divisions
d)occurs in metaphase 1
e)diploid has full set of genetic information while haploid has only half
Lumina or lumen is the space inside of tubular-shaped structures inside our body. The size of the lumina ranges from small to big. Medium-sized can be represented by open cavities within the esophagus, the small and large intestine, and the colon. Food passes<span> through the lumen of the esophagus.</span>