fossil - preserved remains of living organism, fossil record - history of life on Earth, documented by fossils, biodiversity - the variety of species on Earth, extinct - when all members of a species die, mass extinction - large number of species go extinct over short period of time, criteria - requirements that must be met for engineering solution to be successful, constraints - limitations on an engineering solution,

Көшбасшылар тақтасы

Визуалды стиль

Опциялар

Үлгіні ауыстыру

Өңдеуді жалғастыру: ?