During her science fair project, Mary discovered that solutions of ionic compounds in water conduct electricity. What type of investigation could Mary perform to discover which type of ions conduct electricity best?

The extra calories for pregnancy are needed mostly during which trimester (s) ?

Made when sediments fill in a cavity made when an object decayed and the sediments harden into rock

Fungi play the role of decomposer in a ecosystem a) true b) false

Which of the following is the contribution of Al-Khwarizmi to the world of mathematics? A. He developed the formula and process used to make Persian rugs. B. His work became the basis for algebra. C.

The physical characteristics of two large predatory animal species are shown in the table below. X - Short canine teeth, eat small prey size Y - 1-foot-long canine teeth, eat large prey size Which species will most likely survive if the prey

Define and explain the term scientific theory

The table below shows the number of the sub-atomic particles in an atom of nitrogen. Sub-atomic Particles Sub-atomic Particle Number Protons 7 Neutrons 7 Electrons 7 What is the amu of a nitrogen atom?

The ions in a compound form and orderly three-dimensional arrangement called a molecule. true or false

How would a scientist study the relationship between the Tiktaalik roseae and modern fish and tetrapods? create a diagram that hypothesizes ancestry use relative dating use transitional fossils to determine age review its analogous structures

In fruit flies, the gene for red eyes (r is dominant and the gene for sepia eyes (r is recessive. if a red-eyed heterozygous fly (rr mates with a sepia-eyed homozygous fly (rr, what are the possible genotypes of their offspring?