That resources, food growth, expand arithmetically while populations in vrease geometrically (exponentially ), So Darwin thought this was a good observation that could be used in nature. Many more organisms are born than the environment can support, so there is a struggle for existence and the organism best suited to the environment will survive and be mire reproductively successful.
The answer is populations tend to increase at a faster rate than their food supply normally allows.
source: Mastering Biology
his theory of population
plants and animals living on a continent seemed more closely related to each other than to plants and animals living in similar regions on other continents
He explained them in terms of descent with modification, common descent and natural selection.
Charles Darwin's greatest scientific contribution is his work on the Theory of Evolution. Without it, the fact that plants and animals evolved from its ancestors would not have been discovered.
All plants and animals have gradually evolved over time through a process called natural selection.
There was no such thing as a gradation from simple to complex organism; as Darwin stressed, from then on, we could "Never use the words higher or lower" when referring to organisms; instead we speak of ancestral or derived characters.
Idon't know
Charles Darwin was the first scientist to suggest that plants and animals evolved over time. Darwin was also the first scientist that did early studies in selective breeding.
He studied theology!
to known species
to known species
darwin first learned about genetics by studying pea plants he was a monk in a monistary in australia that where he learned about plants and animals and how they got their features (i just studied this, SPOKEN FROM A REAL 12 YEAR OLD!!)
Recorded observation about the plants and animals he saw.
Plants,animals,and rocks
charles darwin
Charles Darwin
animals, microorganisms and plants.
The diversity of the animals and plants he saw .