Which of the following gases was not believed to be present on earth at the time of its formation 4.6 billion years ago?

Erythrocytes are an example of specialized cells true false

How do minerals impact our daily lives?

Describe the activity of protons when an acid and base are mixed together

Lipids are water-soluble. true or false

Explain why the homologous structures are evidence of evolutionary relationships

Even though Lebron is a great basketball player, he only won 1 championship ring. Not winning is making him depressed and therefore makes him want to eat a lot of lipids.

When pushing a child on a swing, you must give them a push periodically to keep them moving. This seems to go against the law of inertia and the conservation of energy. Why does the child need a push periodically to keep moving.

Cholesterol is repelled by water and can be found between the layers of the phospholipids in the plasma membrane. What can be concluded from this information? Question 14 options: A high cholesterol diet should be avoided. Cholesterol is nonpolar.

Which is produced immediately after a plant sperm cell fertilizes an egg cell? a. a zygote b. plant nutrients c. sweet nectar d. a spore

In modern classification system, unicellular organisms that contain chloroplasts and a nucleus would be considered; A) annelids B) protists C) archaea D) chordates