Answer:
DNA can be described as the molecules which carries the genetic code for every individual. The DNA is made up of nucleotide bases which join the two strands of DNA. The sugar and phosphate form the backbone of the DNA.
Genes are the hereditary molecules which are made up of DNA. The alleles of a gene represent which traits will be carried by an organism.
Chromosomes are made up of genes. During reproduction, crossing over of DNA occurs and alleles of the genes assort independently due to which variations occur.
What he did was say that evolution happened that over time the birds seemed to be changing
Insulin controls blood sugar by lowering it, glucagon tells the liver to release its stored sugar into the blood stream, increasing blood sugar.
Answer:
Because the biodiversity decreases.
Explanation:
An ecosystem is richer when it has a higher biodiversity, remember that each living thing has an specific role in the food web. When in an ecosystem this web is bigger, increases the probability of sustain a living thing. For example, in the sea, if there is a fish, this is going to be more probabilities of survive if this fish can eat different plants or other fish. But if in the ecosystem there are not a variety of them, it probability to survive is less if one of it food desapear.
Local wind patterns and global wind patterns are main causes for cyclonic storms.
<u>Explanation</u>:
Tornadoes are formed over the land, while hurricanes are formed on the water. Hurricanes are formed as of a storm in a tropical area or warm area, on the other hand hurricanes are formed due to different situations in various places. When large masses of air of different temperature and densities meet together, cyclone storms are caused. As the lower density air mass rises and the cooler descents, what is formed is called a weather front, and the coriolis effect makes the front to start spinning and form a funnel. The biggest fuel system is water vapor from the oceans in a tropical storm. The water releases heat and surrounds the air as the water vapor rises and condenses, causing a low pressure, hence the cooler air masses moves to the region with low pressure as the warm air goes up. The spiral begins and a tropical storm is formed. This is how local and global wind patterns affects the formation of tornadoes and hurricanes.
