One theory of early life on Earth states that the first life forms did not use oxygen for respiration and were unable to make their own food. Based on this theory, which types of organisms were most likely present? aerobic, autotrophic bacteria

aerobic, heterotrophic bacteria

anaerobic, autotrophic bacteria

anaerobic, heterotrophic bacteria

the correct option is option d

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

its temperature is increasing. this causes molecular vibrations to increase.