Answer:
- Protozoans → would not have survived because they have no way to produce their own food → Heterotrophs
- Algae → would have survived without this food source → Heterotrophs
Explanation:
The protist kingdom is composed of two main groups. The principal difference between them is that algae can produce their own food, while protozoans need to ingest other organisms or organic molecules to survive.
- Algaes are autotroph
- Protozoans are heterotroph
<u>Protozoans</u>:
Microscopic unicellular organisms, eukaryotic and heterotrophs -predators or detritivores-. Most of them are aquatic free-living organisms, but some species are parasites. They feed on<u> bacteria</u>, other organic wastes, and other microscopic organisms. The phagocytosis process is normally used to ingest the food, invaginating their cell membrane.
<u>Algae</u>:
Eukaryotic micro- or macroscopic organisms. Autotroph and photosynthetic. They might be either unicellular or pluricellular. They use sunlight to synthesize organic matter from water, CO₂, and mineral salts. Unicellular ones can be free-living or associate with others to form colonies. They are part of the phytoplankton and are ingested by heterotrophic organisms. Pluricellular algae do not create real tissues but they compose a tale. The depth at which they inhabit depends on the pigments they produce. All of them inhabit fresh or sea waters.
When toucans are removed from an ecosystem it leads to loss of hardwood trees, deforestation, and global warming.
Explanation:
Toucans are very attractive brightly colored large birds which are fruigivore (fruit-eaters). They are specially adapted with a large, sharp but lightweight bill which helps the toucans to reach to branches to pick fruits, berries, seeds mostly which are larger and difficult for the smaller birds to eat.
Their main habitat for the toucan is the rainforests. They are woodland birds and stay mostly on hardwood trees.
Toucans help the rainforest ecosystem to grow by dispersing the seeds of the fruits they eat all around the forest as they keep flying. This makes the species of trees from which toucans pick their fruits to increase and makes the rainforest healthy.
When toucans are removed, then dispersal of seeds becomes less and spreading of hardwood trees will be reduced slowly leading to deforestation and drying up of forest lands.
Bigger hardwood trees play a major role in reducing carbon footprint compared to the softwood smaller trees and this increase in carbon will lead to global warming.
There are two steps: condensation and precipitation. Condensation - First, the water vapor condenses. Condensation is the change of water from gas form to liquid form. When water vapor in the atmosphere loses heat and cools down, condensation happens.
As high cholesterol diets become more common, individuals with the APOE-42 allele will have a better survival rate, so the allele will increase in frequency.
<h3>What is natural selection?</h3>
Natural selection is the main evolutionary force by which evolution (change) occurs over time.
An adaptive allele is a given gene variant that confers an evolutionary advantage to the individual.
In this case, the APOE-42 allele confers an evolutionary advantage and therefore it will increase its frequency in the population.
Learn more about the natural selection here:
brainly.com/question/23929271
Answer:
Asthma refers to a disease in which swelling of the airways results in the restriction of airflow into and out of the lungs. During the occurrence of an asthma attack, the production of the mucus gets increased, the bronchial tree muscles become constricted, and the inflammation of the air passages lining occurs. This further minimizes the flow of air and generates a kind of wheezing sound.
The bronchodilators quickly help in relieving the symptoms of acute asthma by opening the airways. The activity of inhaled bronchodilator begins some minutes post inhalation and endures for two to four hours.
All the kinds of steroids minimize swelling in the airways, which transports air towards the lungs and minimize the generation of mucus produced by the bronchial tubes. This makes one breathe easily.
The inhaled steroids cure swelling of the airways, and only a very minute concentration of it gets captivated by the body. Thus, these medicines do not seem to result in any kind of serious side effects in a long run.