Which two ecosystems are terrestrial? O A. ponds and lakes
O
B. forests and estuaries
o C. oceans and grasslands
OD. forests and grasslands

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

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above