It just takes one sperm cell to go into the female egg to then produce a baby
Answer:
2 valence electrons
Explanation:
All of the elements in group 1 have 1 valence electron, the elements in group 2 have 2 valence electrons, and so on.
Human and butterflies have a lot in common
1.They both start from an egg
2.The butterflies grows into a caterpillar first and a human starts as a toddler
3.after they adapt and the butterfly starts to become a butterfly and the same Happens to a human after a toddler they be a child.
You always need water, food and oxygen to survive. All living organisms need them.
Homologous traits of organisms are due to sharing a common ancestor, and such traits often have similar embryological origins and development. This is contrasted with analogous traits: similarities between organisms that were not present in the last common ancestor of the taxa being considered but rather evolved separately.
