One hypothesis about the extinction of dinosaurs is that a meteor hit the earth causing an explosion so powerful that blocked out the sun. consider the model above and explain why would this have caused a mass extinction

What layers are outside of the plasma membrane

Will apophis hit earth in 2029

A family has a Y-linked disease that affects the father. What is the chance of a male offspring inheriting the same disease? A 100% B. 50% C. 25% D. 0% Reset Reset Next Next

Julio is studying the bald eagle, which has a binomial name of Haliaeetus leucocephalus. Using the modern system of classification, which statements can Julio make about the eagles? A The kingdom is Animals. The genus is leucocephalus.

What are the two major parts of a eukaryotic cell?

Which of the following is a function of the cell membrane of a cell? A. The production of energy from food molecules using cellular respiration. B. The production of genetic material through DNA transcription. C.

Which process occurs only in autotrophic organisms?

Polymers are made of individual subunit called

What are the exergonic reactions that provide living systems with energy (give two examples) ?

The roots of a plant are usually located underground and composed of which of the following tissue systems?