Proteins and lipids if you can select multiple
50 meters is a length too big for any existing animal on Earth. Many trees achieve 50 meters in hight though.
Hope it helped,
BioTeacher101
Answer:
The stratification of Earth into its geologic layers was brought about by the formation of the Earth's iron core. The iron core was generated by a combination of radioactive decay and gravitation, which raised the temperature enough for molten iron to form.
Explanation:
