Formulate the main provisions of the evolutionary theory of J. B. Lamarck. Points of Lamarck’s evolutionary theory.

• The first organisms originated from inorganic nature by spontaneous generation. Their further development led to the complication of living beings.
• All organisms have a striving for improvement, originally laid in them by God. This explains the mechanism of complication of living beings.
• The process of spontaneous generation of life continues constantly, which explains the simultaneous presence in nature of both simple and more complex organisms.
• The law of exercise and non-exercise of organs: constant use of an organ leads to its enhanced development, and non-use – to weakening and disappearance.
• The law of inheritance of acquired traits: changes that have arisen under the influence of constant exercise and non-exercise of organs are inherited. So, Lamarck believed, formed, for example, the long neck of a giraffe and the blindness of a mole.
He considered the direct influence of the environment to be the main factor of evolution.