fossil - remains or evidence of plants and animals in minerals, key bed - a layer of rock that scientists can clearly identify the time in Earth’s period in which it formed, horizontal - parallel to Earth’s surface, sample - small amount of a material that is used for observationfor  , strata - layer of rocks,

Savvas - 4th Science - Unit 6 Vocab.

بواسطة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟