d. coal because coal forms over millions of years, not just that, even now, our earth have resources
Explanation:
Frog undergoes a complete metamorphosis. It includes the egg, tadpole, froglet and then adult frog stages. In complete metamorphosis the hatchling does not resemble the parent and changes as it grows to be an adult.
During metamorphosis the tadpole will develop back legs first, then front legs. Around 6 weeks of life the mouth starts to widen. Sometime around 10 weeks the froglet’s, as it is now called, eyes start to bulge out and the tail begins to shrink and eventually disappear. When the lungs finish developing the froglet makes it’s way onto the land and, Ta-da! It’s a frog!
Hope this helps!
The allele frequencies in a population will remain constant unless one or more factors cause these frequencies to change. Is it common for a population to remain in genetic equilibrium? ... Yes, for some populations and in rare conditions for long periods of time. i litterly just googled that and i have NO idea wat that says or is talking about.
