A removal of a dam in a river has restored river flow and improved the water quality of the river. Which of these would most directly increase due to the enhanced water quality in the river ecosystem? a. pollution b. biodiversity c. death rates d. global climate change

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

Which way do the nitrogenous bases in dna pair up? a. a and g; t and c b. a and c; t and g c. a and t; g and c d. a and a; t and t; g and g; c and c

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups