Chapter 1.1

Question 1

biotic factor

Answer 1

a living organism in the environment

Question 2

abiotic factor

Answer 2

a physical, non-living part of the environment

Question 3

ecosystem

Answer 3

all the organisms in an area as well as the abiotic factors with which they interact

Question 4

habitat

Answer 4

all the biotic and abiotic factors present in an area that encourage the reproduction and survival of a particular organism

Question 5

algae

Answer 5

microscopic, photosynthetic organisms that play a vital role in marine and freshwater ecosystems

Question 6

nutrient

Answer 6

any element or compound that an organism needs for metabolism, growth, or other functioning

Question 7

harmful algal bloom

Answer 7

a rapid growth of algae that can deplete the oxygen dissolved in the water and block the sunlight required by other organisms in the aquatic ecosystem