Answer:
Lunar eclipse
Explanation:
During a lunar eclipse, the earth enters between the sun and the moon, thus preventing sunlight from reaching the moon. There are two types of lunar eclipses: A total lunar eclipse occurs when the moon and the sun are on opposite sides of the earth. When only part of the earth's shadow covers the moon, a partial lunar eclipse will occur. In some cases, it is called a blood moon, similar to the blood moon that occurs this month.
Drugs are chemicals that affect the brain by tapping into its communication system and interfering with the way neurons normally send, receive, and process information. Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter. It destroys the brain.
So scientists can easily communicate with each other worldwide.
Answer:
b. Neither the researchers nor the study participants know who is receiving the drug and who is receiving the placebo.
Explanation:
In a double-blind test, there are two groups of participants: (1) people who are receiving the new drug and (2) people who are taking a placebo. Neither people from group (1) nor people from group (2) know what they are taking. Also, researchers recollect data from theses groups without knowing which person belongs to each group to avoid any "favoritism" caused by expected results.
The lysosomes are the organelle responsible for the conversion of the pollywog to a frog (the loss of the tadpole’s tail).
Lysosomes are organelles found in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.They are spherical vesicles that contain hydrolytic enzymes that can break down many kinds of bio molecules.