If the concept of evolution is defined as a scientific theory, what must be true about the concept of evolution?

Change occurs in the heredity characteristic of living organism over time.

Explanation:

Change occurs in the heritable characteristics of living organisms with the passage of time is known as evolution. Evolution consist of three basic principles which are variation, heredity, and differential fitness. The organisms evolved with the passage of time due to change in the environmental conditions which able them to survive in that harsh climatic conditions and those which is not evolved can't survive and in the end extinction occur.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

fabric is silk wool ext. paper isnt

explanation:

u cant make fabric out of paper cause paper comes from wood while fabric comes from animals