Which type of force holds galaxies together? A. electrostatic forces B. gravity C. magnetic forces D. friction

An open-minded scientist does all of the following except

Which of the following is NOT a unique property of water? A) Surface tension B) It's powerful solvent C) Ice is less dense than water D) It only exists in liquid and solid form.

Down syndrome is most often the result of an extra copy of chromosome 21, a condition known as trisomy 21. The extra chromosome originates from the failure of homologous pairs to separate during gamete formation in one parent.

A group of cells working together to do a job

The two process that are most often responsible for the breakdown of rock into soil particles are choose the two that apply (1. accretion (2. weathering (.3 deposition (4. erosion

If element X has 76 protons, how many electrons does it have

Match each description with the correct division of the peripheral nervous system. somatic nervous system regulates voluntary activities parasympathetic nervous system regulates involuntary activities sympathetic nervous system called the rest and

Which of the following diseases is caused by a spirochete? tularemia relapsing fever rheumatic fever Rocky Mountain spotted fever

The brain of the nervous system and the endocrine glands of the endocrine system are similar to one another in certain ways. Both act to send messages to distant body parts. What is a significant difference of the activity of endocrine glands? A.

After reviewing the process of meiosis describe how an error during meiosis could lead to polyploidy