Question

True/False
Earths atmosphere, oceans, and continents began to form during the first several hundred million years of Precambrian time.
a. True.
b. False

A mold forms when minerals replace all or part of an organism.
a. true
b. false

short answer: How are a mold and a cast related?

Answer 1

1] A-True, Earth formed around 4.54 billion years ago and much of the Earth was molten at first. Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation ending with the emergence of complex, multicolored life-forms almost four billion years later.
2] B-False, A mold forms when hard parts of an organism are buried in sediment, and P
petrified fossils form when minerals replace all or part of an organism.
3] A mold and a cast are similar in that they both hold the shape or a part of an organism.
(medals are greatly appreciated)