Answer:
The most obvious and widely publicized barrier to renewable energy is cost—specifically, capital costs, or the upfront expense of building and installing solar and wind farms. Like most renewables, solar and wind are exceedingly cheap to operate—their “fuel” is free, and maintenance is minimal—so the bulk of the expense comes from building the technology.
Answer:
I believe the answer you're looking for is B. Normal
Explanation:
Most cell types are very permeable to water. an exception is cells of the distal nephron, which can be either impermeable or permeable, depending upon the absence or presence of aquaporins.
the answer is 3,190,000 kcals
Well you can inclue in your paragraph many data related to quartz like: 1) Is the most abundant and most widely distributed mineral on the earths ground. 2) It is present in all the world. 3) Its very durable 4) Used in the glass making industry 5) You can use it also in the petroleum industry in the process known as hydraulic fracturing and 6) Used in a variety of gemstones.
