Which is the best way to describe the biodiversity of an area? A grassland has organisms that live on hundreds of acres of land.
A desert has 10 species of animals that can survive dry conditions.
A rainforest has fertile soil that supports many kinds of plants.
A pond has 12 species of organisms, including 300 animals and 40 plants

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates