Answer:
For early earth, it was filled with loads of oxygen and could kill humans if they breathed the oxygen that was in the air about 100 million years ago. This massive amount of oxygen cause massive creatures like the dinosaurs to exist. Current earth has an atmosphere with not too much oxygen.
Explanation:
brainliest
Check on google they will give you the answer and others descriptions
If the original cell had 52 chromosomes then the two daughter cells produced would be identical, both with 52 chromosomes
Answer:
My guess is A
Explanation:
I guess it's a but dont choose it it might not be right
Answer:
Son las características que tienen los elementos y que varían en forma secuencial por grupos y períodos. Algunas de esas propiedades son: radio atómico, potencial de ionización, electronegatividad, estructura electrónica, afinidad electrónica, valencia iónica, carácter metálico
