If you were in a boat as Hurricane Sandy passed overhead on October 28 at 4am, at what altitude would Polaris appear in the sky from your location (32°N and 73°W) ?

a scientist is conducting an investigation that involves water, silver corbon dioxide, and oxygen gas. Which group of statement best describes all of the materials he is using in the investigation?

Question 1 Elements in the same period have the same __. valence electron electrons atomic number valence shell number Question 2 Which element has the greatest reactivity?

During decomposition by fungi, nutrients are

A process by which amoeba reproduce sexually

If there are 20 duplicated chromosomes in a cell, how many centromeres are there?

Which substance will have a pH close to 7

The process that allows for genetic diversity in population is Sexual reproduction Asexual reproduction Cloning Extinctions

A new, sixth global mass-extinction event appears to be occurring on earth today. the most likely explanation for the dramatic loss of species is

What must happen to pyruvate before it can enter the kreb's cycle? explain.

Select all that apply. Over time plants and animals have developed defenses against being eaten. What are some examples of these defense mechanisms?