Believe it or not, ice is actually about 9% less dense than water. Since the water is heavier, it displaces the lighter ice, causing the ice to float to the top. How is ice less dense than water? ... So for water, the density actually decreases along with a decrease in temperature - causing ice to be less dense than water!
Answer:
C.Astroids and meteoroids
They are the first organisms , usually plants that colonize barren rock or lava during succession. They physically break up the rocks, extract minerals, and provide organic matter that will decompose and become the soil for later successional species.
Answer:
Igneous rock.
Explanation:
Igneous rocks are formed from lava or magma. Magma is molten rock that is underground and lava is molten rock that erupts out on the surface. The two main types of igneous rocks are plutonic rocks and volcanic rocks. Plutonic rocks are formed when magma cools and solidifies underground.
Answer:
The construction of a new pier.
Increased non-motorized boat traffic would not really do anything, because the ocean would wash it away like always.
Recreational fishing wouldn't pose such a threat, we have been doing this for thousands of years.
Humans swimming around a pier wouldn't pose sucha threat either- they will not kill anyone.
But the pier would release a lot of sewerage, oils, and more harmful things than all of these other things combined.
Hope it helps!
