2. which of the following describes the most important difference between invertebrates & vertebrates? a- vertebrates contain multiple tissues, while invertebrates do not b- invertebrates contain multiple tissues, while vertebrates do not c- vertebrates contain a backbone, while invertebrates do not d- invertebrates contain a backbone, while vertebrates do not need

Aseries of connections of food chain in an ecosystem is called a what

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood