Answer:
They digest without the use of teeth.
Explanation:
The food trickles from the crop into the bird's stomach (proventriculus or gizzard) where digestive enzymes are added to the mix and physical grinding of the food occurs. The gizzard is why chickens do not need teeth.
→ Darwin believed that the need to adapt, in similar words, the changes occruing in the environment caused evolution.
The main cause of evolution, according to Darwin, was natural selection. Natural selection is a process in which a group of organisms with certain characteristics survive and thrive, in comparison to other organisms with different characteristics. This idea basically means that having some characteristics makes you suited for an environment.
And how would that ↑ explain Evolution?
Well, evolution is the change in species that occurs during time. But for you to change, there must be a cause for that change, which is none other than the need to survive, reproduce, etc.
→ As mentioned before, not all characteristics are enough to surive, and hopefully the image pasted below will help you.
Hope it helped,
BioTeacher101
Answer:
The Fibonacci succession is the next infinite succession of natural numbers, each Fibonacci number is the sum of the two previous to it: a hurricane, the galaxies or the roses have this pattern in nature.
Explanation:
The Fibonacci spiral: an approximation of the golden spiral generated by drawing circular arcs connecting the opposite corners of the squares adjusted to the values of the succession; successively attaching squares of side 0, 1, 1, 2, 3, 5, 8, 13, 21 and 34.