What kind of pollution was the most abundant in the us national parks in 1989? how did this pollution affect park wildlife and ecosystems? (site 1)

Which concept reflects the increasing numbers of species present in an area that includes a wide variety of habitats, vegetation types, and small-scale environments? a. beta-diversity b. conservation biology c. alpha-diversity d. landscape ecology

All the organ systems in the human body work together to perform which function

When a comet passes near the Sun, it experiences a force that causes it to change direction. What causes this force? A. the Sun's electric charge B. the Sun's magnetism C. the Sun's temperature D. the Sun's mass

Which area in the united states has the highest average number of thunderstorms per hour?

Which layer of soil has little or no humus?

Which occurs during translation? mRNA is created by using a DNA template. mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein. Protein is formed when a polypeptide chain is broken apart and released from ribosome.

2. Which of the following is NOT a threat to biodiversity? A) Pollution. B) deforestation. C) crop rotation. D) climate change.

Why is good habitat important for animals?

A car increases it's velocity from 0m/s to 14m/s in 2 seconds what's is it's acceleration

What are the four bonds in dna?