Which element is brittle when a solid and is a poor conductor of electricity and heat O calcium
O copper
O sodium
O sulfur

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

What is the main fuel source for the work of the cell

What type of graph presents information about how often certain or traits occur?