The three type of tectonic plate boundaries are:
Convergent- two plates are moving towards each-other. Forms volcanoes, mountains and can cause earthquakes too.
Divergent - two plates are moving away from eachother. The space that is created between them is filled with lava from the mantle which cools to become part of the crust. These areas are hotspots.
Transform - two plates are moving against eachother (one down, one up etc.) They cause minor earthquakes.
Answer:
450 years all in all but it'd take about 1000 years in a landfill
Explanation:
In HIV-infected patients, there is a gradual loss of CD4+ T cells over time. These cells, also called T helper cells, organize the immune system's attack on disease-causing invaders, like Salmonella.
Origin of species by means of natural selection
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