Why do you think millions of sperm are needed to fertilize one egg?

What is the stage of mitosis where DNA is condensing into organized chromosomes and the nuclear envelope disappears?

Which of the following does NOT include a group of health effects from protists? A. causes malaria, photosynthesize, cause sickle cell anemia B. causes amebic dysentery, are detritivores, recycle resources C.

In 1995, doctors reported a Chinese family in which retinitis pigmentosa (progressive degeneration of the retina leading to blindness) affected only males.

Natural selection is the process by which favorable traits tend to increase in frequency over time

Climate Which factor is present in higher amounts in winds that come from oceans than winds that come from land? O air pressure O cool air O warm air O water vapor

Explain the life cycle of plasmodium?

Compared to terrestrial plants, what challenges do aquatic plants have to overcome in order to carry out photosynthesis?

How are living mammals classified into groups? a. type of circulatory system b. method of development c. method of respiration d. method of regulating body temperature

In the european union what is the geographical unit of water pollution control?

Why is food waste harmful to the environment?