Properties of smell, color, and the temperature at which a substance melts are listed by these repeating groups of atoms. Which properties will be the same or different? A)Properties are different because there are more repeating groups of atoms in a sample
B)Properties differ because there are more repeating groups of atoms that make up each sample that is different.
C)Properties differ because there are more repeating groups in the two samples but have the same number of atoms.
D)Properties are the same because repeating groups have the same types of atoms.

segmentation=endoskeleton=backbone=coelom=tissues

burning fossil fouls really decrease the carbon in the atmosphere so b

1. the geologists have established a set of principals that can can be used o determine the relative ages of rock. this principal is applied to sedimentary and volcanic rocks. the rocks exposed to wall of grand canyon has layers and by studying the number of horizontal layers in the rock(strata) the relative age can be determined. the layer first formed will appear at the bottom and the the layer of strata last formed appear at the top. by using this information the approximate age of rocks can be determined.

2. carbon dating is used to find the relative age of rock in numbers which means for the rocks that has age between 1-70,000 years.

3. for the rocks of age range between 1,000 - billion of years potassium-argon dating is used.