What is believed to be the first type of cells on earth? a. tree cells b. eukaryotic cells c. prokaryotic cells d. plant cells

At the chromosomal level, whats the difference between human males and human females? A. All males have a Y chromosome, and females do not. B. All males have a X chromosome, and females do not. C.

How does pesticides harm the environment

The dot plot shows the number of songs in a play list. Determine the mean of the data set. A) 39 B) 40 C) 41 D) 42

List the level of organization in order from smallest to largest ... ?

Thermal energy tends to flow as heat A. from a system of lower energy to a system of higher energy. B. only between systems that have equal energy. C. only between systems that have equal temperatures. D.

Explain the difference between an iconic compound and a molecule

Skin cancer is to exposure to the UV radiation as a keratin is to tanning b acne is to excessive secretion of oil c waterproofing is to temperature regulation d melanin is to acne

There could be many possible interpretations of what surrounds you in the natural world. O True O False

What is the only item that can be reused in a self-service situation? Select one: a. Beverage Cups b. Utensils c. Straws d. Plates

A scientist begins working by trying to explain a natural occurence that is