Download this link starts first one 1) Isn`t evolution just a theory? What I think: 2

https://www.youtube.com/watch?v=85diEXbJBIk this link starts first one
1) Isn’t evolution just a theory? 2) Who was Charles Darwin?
What I think:
What I think:
3) How do we know what
happened?
What I think:
Notes from video:
Notes from video:
Notes from video:
Evolution isn’t JUST a theory any
more than gravity is JUST a theory.
A theory is an explanation for a large
body of evidence.
There is a large and growing body of
evidence for evolution.
We can never prove it, but we can
continue to put together the pieces of
evidence to tell the story of how life
evolved.
An English naturalist. He was the
one to come up with the concept of
evolution by natural selection, and
the connectedness of all organisms to
a single common ancestor.
He sailed The HMS Beagle to the
Galapagos Islands and studied the
differences between the similar
species on the various islands. This
gave him information to understand
how new species formed from
common ancestors on the mainland.
Fossils are the main source of
evidence for evolution.
Fossils tell the story of the evolution
of whales from a wolf-like creature.
4) How does evolution really
work?
What I think:
5) Did humans evolve?
What I think:
6) Why does evolution matter
now?
What I think:
Notes from video:
Notes from video:
Notes from video:
The mechanisms for natural selection are:
Genetic variation. For example,
hummingbirds of a same species can be born
with different length beaks.
Overproduction of Offspring. For example,
an adult hummingbird may have dozens of
babies over a lifetime, but only a few (the
ones with the best adaptations) are expected
to survive.
Struggle for existence. For example, the
hummingbirds may compete with each other
for the nectar from the local flowers.
Differential Survival and Reproduction.
For example, the hummingbirds with the
optimal beak length will survive to pass their
genes down to the next generation.
Yes, humans evolved, but we did not evolve
FROM apes. We and apes have a recent (in
evolutionary terms) common ancestor. DNA
evidence shows that we have very similar
DNA to chimpanzees. This shows that
humans and chimpanzees are the most
recently branched in the primate family.
Because it is still happening every day.
Bacteria are quickly evolving resistance to
antibiotics, creating “superbugs” that can no
longer be treated (as in a strain of TB
spreading through Russian prisons). We
use our knowledge of how evolution works
to continue the battle against antibioticresistant bacteria.