Answer:
Basaltic magma -- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na
Andesitic magma -- SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K
Rhyolitic magma -- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na
Explanation:
Answer:
A wide range of migration data is collected and disseminated in Europe at national and, sometimes, subnational level. Institutional and legal frameworks have been developed by the European Union (EU) with the aim of ensuring that migration data are of high quality, comparable across countries as a result of harmonization (as established in the legal basis) and easily accessible. A continuous process of political dialogue is in place to ensure that the frameworks keep pace with increased demands for information and knowledge.
Explanation:
Answer:
Humans and most other mammals have two sex chromosomes, the X and the Y. Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome.
Explanation:
Answer:
the distortion of water and Earth that we call a tidal bulge is a result of deformation of earth and water materials at different places on Earth and response to the combined gravitational effect of Moon and sun
