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Can you please help me with my sciene homework.. I don’t understand it and i can’t find it in the text book
1. A _____ is the role an organism plays in the ecosystem.
a habitat
b symbiosis
c population density
d niche
2 _____ is the largest number of individuals of a species that an environment can support and maintain for a long period of time.
a Population size
b Limiting factor
c Carrying capacity
d Symbiosis
3 The number of individuals in a population is the population’s _____.
a carrying capacity
b size
c density
d spacing

1) A condition in the environment that can restrict a population’s growth is a
A) Niche
B) Limiting factor
C) growth factor
2) Which of the following is a measurement of population density?
A) The number of frogs in a pond
B) The number of deaths per year
C) the number of bacteria per square millimeter
3) Which would be least likely to be affected by a density-dependent factor?
A) A small, scattered population
B) A large, dense population
C) A population with a low death rate
Complete each sentence or statement:
The ___method of estimating population size involves measuring every member of a species within a small area.
Space, food, and ___ are density-dependent factors.