Name three major adaptations for life during the late Precambrian

Answers

Answer 1

Answer: Sexual reproduction, which created a wider variety of organisms
Cell colonies, with organized special jobs
and the introduction of the first ever multicellular organisms

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A person touches a hot surface with his hand and his hand springs back. Which two systems are operating?

Answers

The answer to this question is letter A.nervous system and musculoskeletal system

When person touches a hot surface with his hand and his hand springs back. His nervous system and musculoskeletal system is operating.

A.nervous system and musculoskeletal system B.cardiovascular system and endocrine system C.musculoskeletal system and endocrine system D. nervous system and cardiovascular system

The answer is nervous and musculoskeletal system.

When a person touches a hot surface with his hand, a receptor detects a stimulus. The information is sent to relay neuron through a sensory neuron, parts of nervous system. Relay neuron sends information to the effector (musculoskeletal system) through a motor neuron and effector produces a response.

A 911 call is made to police. Upon arrival to a crime scene, investigators discover the body. Instar I and Instar II maggots are found on the body. What was the approximate PMI of the victim? (Assume normal temperatures and conditions)