Answer: I feel that the theory of plate tectonics is correct, because we use friction every day which means friction could make vibrations larger too!
Blood in the umbilical artery contains less glucose than blood in the umbilical veins is the way in which the composition of the blood in the umbilical artery and the umbilical vein differ. The correct option among all the options that are given in the question is the first option or option "A". The umbilical vein carries more amount of oxygen than the umbilical artery.
Summary of how rocks can be broken down into smaller pieces
Answer:
a) food availability
Density-dependent factors have varying impacts according to population size. Different species populations in the same ecosystem will be affected differently. Factors include food availability, predator density and disease risk. Density-independent factors are not influenced by a species population size.
1. Temperatures are extreme; mostly high or very cold temps (only winter and summer it feels like). They have changed over years.
2. Polar ice caps (glaciers) are melting drastically.
3. Habitats/ecosystems such as the coral reef are suffering and are expected to disappear over the course of 10-20 years