Can someone please Check my biology answers please!

1. Which statement is the best description of an ecosystem?
An ecosystem is made up of individuals of the same species in the same place.
An ecosystem grows exponentially unless a factor limits it.
An ecosystem is a large tract of land that includes many species.
An ecosystem is a community and its surrounding nonliving environment.<<<<<<<<<<<<<<-----

2.A newly discovered animal reproduces slowly. It has only one offspring each time it reproduces. Which reproductive strategy does this organism use? (Points : 3)
carrying capacity
endangered
r-strategy
K-strategy<<<<<<<<<<<<<<<<<-----------…


3.A large geographic area is dominated by specific types of plants and animals and is characterized by a distinct climate. What is it called? (Points : 3)
a biome<<<<<<<<<<<<_----------------------…
a biodiversity
a biosphere
an ecosystem

4.Which types of organisms recycle organic molecules of dead organisms at all trophic levels and then return their nutrients to the surroundings? (Points : 3)
carnivores
parasites
herbivores
decomposers <<<<<<<<<_------------------------------…

5.Biodiversity is best described by which of the following?
the number of communities in an ecosystem
the total size of a population of a single species
the total number of different species in an area<<<<<<<<<<<<<-----------------------…
the number of trophic levels in a food web

6.Which statement best summarizes the water cycle?
As water moves through an ecosystem, its energy is lost between trophic levels.
Water in the atmosphere must be converted to another chemical before animals can use it.
The water on earth changes forms as it moves from one reservoir to another<<<<<<<<<-------

7.Which trophic level contains the organisms that are the source of chemical energy used in an ecosystem? (Points : 3)
omnivores
parasites
producers <<<<<<<<<<<<<<-----------------------