Answer:
Option A, Key stone
Explanation:
A keystone species plays a major role in an ecosystem as it is the species whose presence effects all other species in the ecosystem .In general a keystone species is always a dominant predator that feed on prey population. If it is removed, the prey population will explode and the population diversity will reduce. For example - bison, prairie dog etc.
Hence, option A is correct
Let's break down each of the words to find out what they mean.
Eukaryotic: This basically means that the organism in question has a nucleus and other membrane-bound organelles. This rules out bacteria and archaea.
Multicellular: The organism must be made up of one or more cells, so that rules out protists.
Autotrophic: This means that the organism can make energy from inorganic substances via a light source or chemical energy. Finally, this rules out animals and fungi.
Cell wall: This also proves that the organism is a plant. Plants are the only organisms that have a cell wall made of cellulose; fungi have one, but they are made of chitin and glucans.
So, your answer is that the kingdom of the organism of a plant.
COMPLETE QUESTION:
Why might better-insulated buildings make air pollution more of a problem?
ANSWER: It prevents the passage of waste gases out of the building and inflow of fresh air which can leads to health related issues.
EXPLANATION:
Building insulation reduces the heat surplus in warmer weather condition and reduces the heat loss during cold weather condition.
The negativity that comes with insulating a building is an increased air pollution. In the process of preventing heat loss to the environment by insulating a building, there's a resultant reduction or sometimes blocking of air flow inside the building. This will cause the concentration of waste that are in gas form inside the building, emanated from human activities like cooking (fuel burning), respiration, and other activities.
Overtime, this trapped in of waste gases can leads to sick building syndrome (an health related issue).
Answer:Renewable resources include biomass energy (such as ethanol), hydro-power, geothermal power, wind energy, and solar energy. Biomass refers to organic material from plants or animals. This includes wood, sewage, and ethanol (which comes from corn or other plants).
So a natural resource would be trees because wood comes from trees.
Hope this helps
plz mark brainliest
