Answer:
Phylogenetic tree represents a hypothesis about evolutionary relationships
Explanation:
Phylogenetic tree is a diagram that represents evolutionary relationships among organisms.Its a hypothesis not a true facts. In a phylogenetic tree two species are related when they evolved from a common ancestor. Modern system of classification is based on evolutionary relationships. Each branch represents a divergence events. Each branch point lies a most recent common ancestor group descended from that branch point
Answer:
During El Niño events, the shift in rainfall away from the Western Pacific may mean that rainfall across Australia is reduced. Over the southern part of the continent, warmer than average temperatures can be recorded as weather systems are more mobile and fewer blocking areas of high pressure occur.
Answer:
The thymus
Explanation:
It is the most active and starts making T-cells before you are even born. After puberty the thymus shrinks and is replaced with fat.
The correct answer is high rates of evaporation.
There are lots of minerals and salts found in the ocean. Out of which the main component is sodium chloride. There are many of the ocean where there is less or no rainfall. The evaporation there removes the water from the ocean leaving behind lots of salts because of which the salinity of the ocean increases.
