Answer:
First two rings are thicker while the last two rings are thinner.
Explanation:
Due to the first two years of optimal growing conditions received by the tree, the width of trunk of the tree is thicker but due to drought conditions experienced by the tree during the most recent two years, there is very little increase occur in the width of the trunk because the tree is in stress condition and for that reason the ring of trunk is thinner as compared to first two years.
The most common incorrect description is that the heart is enclosed in a double-layered sac called the pleural membrane. The reality is that the heart is enclosed in a double-layered membrane called the pericardium. The correct layers from out to in are <span>epicardium, myocardium, endocardium </span>
Answer:
Bio means "life." It's a Greek root word for many vocabulary words such as biology (bio = life, logy = study, hence the study of life) and biography (bio = life, graphy = writing).
Answer:
It's the tundra
Explanation: I say that because the tundra, which literally means "treeless plain," is the coldest biome. Extremely low temperatures, limited precipitation, a short growth season, minimal biodiversity, and nutrients in the form of decaying organic matter are all characteristics of tundra.
Answer:
Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust.
Explanation:
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