Which organisms represent the most biomass in anwhich of the following is a natural source of carbon emissions? ecosystem?

Answer 1: Producers represent the most biomass in an ecosystem.

Answer 2: Human and animal respiration, decomposition and volcanic eruptions are natural sources of carbon emissions.

Explanation:

Answer 1: Producers represent the most biomass in an ecosystem.

Producers refer to plants, trees, shrubs, etc., that make up the first trophic level of an ecosystem. Producers are vital to ecosystems as they produce food for themselves as well as primary consumers.  Producers represent the most biomass in an ecosystem as they are the first trophic level in an ecosystem. As we go up trophic levels in an ecosystem, only 10% of energy as biomass is passed on to the next trophic level. Thus, producers represent the most biomass in an ecosystem.

Answer 2: Human and animal respiration, decomposition and volcanic eruptions are natural sources of carbon emissions.

Respiration is a natural source of carbon emissions as, when humans and animals exhale, they release carbon dioxide and water vapor in the atmosphere. Similarly, when plants and animals die and decompose (decay), carbon dioxide is released in the atmosphere as part of the decomposition process. Thirdly, volcanic eruptions are also a significant form of carbon emissions as annually, 200 million tonnes of carbon dioxide is released from the earth's interior when volcanoes erupt. In this way, human and animal respiration, decomposition and volcanic eruptions are natural sources of carbon emissions.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

answer; a male inherits only one allele of the x-linked gene controlling hair color;