The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due to gradual process or Catastrophic events.
Smooth muscles- protects the organs
Cardiac muscle- around the heart
And skeletal
Answer:
Two rounds
Explanation:
Meiosis is characterized by one round of DNA replication followed by two rounds of cell division, resulting in haploid germ cells. Crossing-over of DNA results in genetic exchange of genes between maternal and paternal DNA.
I believe it would be a fossil of a reptile but I'm not a 100% sure about it.
