Which type of tissue performs a roll of signal conduction in the body?

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

What is the next step in muscle contraction after the actin changes shape? (apex)

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?