Which describes pumice and obsidian? a. both pumice and obsidian are coarse-grained intrusive igneous rocks. b. pumice is a coarse-grained extrusive igneous rock, while obsidian is a fine-grained intrusive igneous rock. c. pumice is a fine-grained intrusive igneous rock, while obsidian is a coarse-grained extrusive igneous rock. d. both pumice and obsidian are fine-grained extrusive igneous rocks.

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e. g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

Cells destroy body cells infected by a virus or bacteria.

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.