Real number : 8394000000
scientific notation : 8.394 x 10^9
Answer:

A society is choosing to replace its nuclear power plants with more sustainable geothermal power plants. Which of the following is an advantage to switching to geothermal power?
A. It can contaminate groundwater.
B. It uses a renewable resource.
C. It consumes a radioactive material.
D. It produces more hazardous waste.
Explanation:

All living cells and many of the tiny organelles internal
to cells are bounded by thin membranes. These membranes are composed
primarily of phospholipids and proteins and are typically described as
phospholipid bi-layers.
<span>Hope I helped. :) </span>
Hi! Can you please make your question clearer ?
A is the correct answer!
- water can moderate temperature v. well that's why it's used as a cooling agent
- water expands upon freezing (that's why ice floats on water!)