Why do some atoms gain or lose electrons to form ions

The production of sperm begins at puberty when spermatogonia undergo meiosis I to form primary spermatocytes, which then undergo meiosis II to form secondary spermatocytes.

Which of the following includes all of the water on or near Earth's surface? Select one: a. geosphere b. hydrosphere c. atmosphere d. lithosphere Which of the following is a disadvantage for Ocean Thermal Energy Conversion? Select one: a.

What is the responsibility of the respiratory system?

What structure takes up the majority of the center space within the plant cells

How is information to make proteins passed on through generations?

How would you explain the relationship between insulin and glucose

When are the homologous pairs of chromosomes separated? 1. Telephase ll. 2. Metaphase l 3. Anaphase l. 4. Fertilization

In what form does the sun's energy arrive on Earth?

Some lizards have an adaptation that allows their tails to break off with minimal damage to bones, nerves, blood vessels, and muscles. This type of lizard can then regrow the missing portion of the tail.

1. A source of simple carbohydrates is a. seeds c. fruits b. brownrice d. potatoes