Answer: Such constant change has characterized Earth since its beginning some 4.5 billion years ago. From the outset, heat and gravity shaped the evolution of the planet. These forces were gradually joined by the global effects of the emergence of life.
Explanation:
Humans are called heterotrophs
Answer:
2
Explanation:
Prophase II, metaphase II, anaphase II, telophase II.
Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.