Answer:
D all of the above
Explanation:
a - provide protective covering on the land to prevent soil erosion
b - provide shade, protect from wind and help moderate the temperature
c - animals can't make their own food, so they depend on plants for supply of food
Therefore, the answer is D all of the above.
Mark as brainliest :)
Answer:
B) He must pull back on the sled with more force than the puppy is pulling forward with
Explanation:
The Earth was first considered habitable when we discovered that it was Microbial organisms that started the process. I would go with D.
Hydroelectric Power
The benefits are: <span><span>
1. </span>Hydroelectric power is mainly a renewable source of energy. It relies on the stream cycle of water which do not cause pollution.</span>
<span><span>2. </span>Hydroelectric power also helps and promote water reservoir and storage.</span>
The cost are:
<span><span>1. </span>0.85 cents per kWh is the average cost in the US.</span><span><span>
2. </span>Conventional installation costs $1,000-$5,000</span>
Geothermal Power
The benefits are: <span><span>
1. </span>There is no pollution</span><span><span>
2. </span>We lessen the utilization of fossil fuels</span>
The costs are: <span><span>
1. </span>$0.03<span> to $0.035 per kWh is the cost of electricity by The Geysers.</span></span>
<span><span>2. </span> <span>$20,000 to $25,000 costs to build this power plant
Hope this helps.</span></span>
Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most massive) to trillions of years (for the less massive), considerably more than the age of the universe. ^
Small, relatively cold, low mass red dwarfs burn hydrogen slowly and will burn for hundreds of billions of years
Massive hot supergiants will live for just a few million years.
A mid-sized star like the Sun will remain on the main sequence for about 10 billion years. Hope tis helps!!
