Answer:
20
Explanation:
number of protons+ number of neutrons= mass of atom
19+n=39
n=39-19=20
number of neutrons=20
Answer:
Like seas, oceans, and enormous lakes, huge waterways can influence the environment of space. The water warms and cools more gradually than landmasses. Subsequently, the seaside locales will remain cooler in summer and hotter in winter, in this manner establishing a more moderate environment with a smaller temperature range.
Explanation:
Brainlist please ;)
Explanation:
Cenozoic = 100 mil years (rounded) = 66 real
Mesozoic = 200 mil years (rounded) = 174 real
Paleozoic = 300 mil years (rounded) = 330 real
Cenozoic = 100mil/4.6bil = .0217 (x100 for percentage) = 2%
Mesozoic = 200mil/4.6bil = .0435 (x100 for percentage) = 4%
Paleozoic = 300mil/4.6bil = .0652 (x100 for percentage) = 7%
Most active volcanoes in South America are found in Chile.
1. Copahue - This volcano lies in Both Chile and Argentina . Its elevation is 9,728 ft. it usually shows intense fumarolic activity. The eruptions are not explosive.
2. Paranicaota - located in both Chile and Bolivia.
3. Gaullatir - located in Chile. It is still treated as active Its most recent eruption was in 1985.
4. Lascar - located in Chile. It is an active one. The most recent eruption was in 1993. It is considered the most active volcano in the central Andes
Answer: Coastal Recession / Erosion
Explanation:
An Estuary is that part of the river that is semi closed and yet mixes with the sea or ocean.
Research has shown that rivers that have Dams built on them have led to rapid coastal erosion. This is because rivers usually carry sediments of SA and other particles with them but these sediments will instead be trapped by the dam instead of being deposited at the Estuary.
This Coastal erosion is a problem because it leads to serious Environmental problems such as the loss of habitat for some organisms, the loss of Coastal protection, loss of biodiversity as well as the reduction in livelihood of people living in Estuarine environments.