Petrification occurs when:

soft body parts are preserved
shell and bone are replaced with minerals
animals are preserved in oil seeps
oxygen comes in contact with the dead organism

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

Which box will not accelerate? 4 newtons 4 newtons 4 newtons 25 kg 4 newtons 15 newtons 10 kg 30 newtons 40 newtons 50 kg 30 newtons 30 newtons

Which of the following is a common response to cell signaling?