Which of the following is an example of microevolution?

a caterpillar changes form into a butterfly.
a population of birds with red feathers slowly changes to having blue feathers.
a dinosaur species evolves over time into a bird species.
a black cat has kittens with white spots.

Which group of chordates does  notpossess true backbones?                 a.  birds      b.  frogs and toads      c.  lampreys      d.  crocodilians

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Which of the following typically characterizes a tropical rainforests