Answer:
Hawaii islands are not formed at tectonic boundaries, but rather at a hotspot. This is a place where hot magma, from deep in the mantle rises to the surface, and through the crust, as the Pacific tectonic plate moves towards the northwest. This magma is very hot because it rises directly from the bottom layers that are hotter than upper mantle. This hotspot is at the boundary of two convection currents in the mantle. The hotspot’s magma pierces through the crust and erupts into a volcanic mountain. The hotspot is more or less stagnant, but in comparison, the tectonic plate above it is moving. Therefore, over time, there will a chain of the mountain as the plate moves over the hotspot.
Earth is the only planet so far known to have water on its surface
Tricuspid valve: located between upper and lower chambers.
Pulmonary valve: Found in arteries leaving heart.
Answer:
lift vs weight and thrust vs drag
Answer:
A) Plants cannot take in the carbon dioxide they need for photosynthesis.
Explanation:
Stomata are tiny openings found in plant leaves. Specialized cells known as guard cells surround the stomata and open and close the openings. When it is very hot, plants may close their stomata to prevent water loss. When plants close their stomata, they will prevent water loss but photosynthesis might be affected.
Plants open and close their stomata for the exchange of oxygen and carbon dioxide during photosynthesis.
