Thier are 37.2 trillion
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Answer:
There are many functions of the circulatory or cardiovascular system. It pumps blood to the heart, transports nutrients and oxygen to cells, and helps provide nourishment to the body. Without it, our body would not be able to fight off diseases or stabilize temperature and pH. It also provides fluid balance.
Explanation:
Answer:
Changes in Earth's climate have different effects in different areas of the world. Some places will warm much more than others, some regions will receive more rainfall, while others are exposed to more frequent droughts. Regional changes in temperature and precipitation are having impacts on people and ecosystems.
Answer:
Most peppered moths used to be grey with dark spots, but have evolved to be mostly black. This is because pollution from the Industrial Revolution threw soot on the trees causing them to look black. This gave the black moths camouflage from predatory birds meaning they survived and reproduced. By survival of the fittest, the peppered moths became black like the trees.
Explanation:
Basically structure of DNA is very important in the process of replication.
DNA molecules have antiparallel structure i.e. the two strands of the halix run in opposite directions of one another. Each strand has 5 prime end and 3 prime end. Solving the structure of DNA unlocked the door to understanding many of the function of DNA, such as how it copied and how the information it carries can be used to produce protein.
