Which of these is an invertebrate?
(a) a lion
(b) a clam
(c) a trout
(d) a cow

B

Explanation:

Vertabrae means backbone so invertebrate means no backbone. A lion and a cow have a backbone so they are off the list. A trout is a type of fish but it still has bones and a vertabrae. A clam does not contain a vertabrae

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.