When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes. A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.
Answer:
B
Explanation:
for 2 water can erode rocks to make canyons and other rock formations 3 because some land mases were formed with water and 4 because in many countries there are monsoon seasons witch brings heavy rain and high humidity
B. photosynthesis uses light energy to convert carbon dioxide and water to glucose and oxygen
Answer:
The correct answer is drink seawater and secrete excess ions mainly through their nasal salt glands.
Explanation:
Avians or Birds that live in marine environments are often referred to as seabirds. They lack access to fresh drinking water.
Seabirds have specialised nasal salt glands found in just above their eyes which is used for drinking seawater and secreting excess ions. This makes them well adapted to life in a marine habitat.
The geographical origin of a sage plant is located in Mediterranean regions.
