The microorganisms are the foundation of all forms of life on Earth, they have prevailed for about 3.5 billion years. The animals, plants, and the modern microbes have all evolved from the primitive bacteria. The life on Earth relies on their activities. According to the human's point of role, one could not survive in the absence of microorganisms.
The microbes demonstrate numerous benefits like the production of oxygen, nitrogen fixation, degradation of substances (like sewage, wastewater, and cellulose). Microbes play vital roles in the biosphere, the economic uses of microbes take place in the field of agriculture, industry, bioremediation, and medical microbiology.
Answer: consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder).
Answer:
Your heart has to work more to pump blood through your body faster
Explanation:
Answer:
Explanation:
Modeling a Food Web
In this activity, you will build a model of a food web in a specific aquatic ecosystem. You will then use the model to explain what can happen to the competition in the ecosystem if environmental factors change because of natural factors and human interference.
Total time: 2 to 3 hours
You will need these materials:
paper
a pen or a pencil
word-processing or graphic-design software
Part A
Begin by selecting a freshwater or marine aquatic ecosystem as a model for your food web. Be specific. Choose a specific lake. Or, if you choose an ocean ecosystem, identify its geographical area and depth. Keep in mind that deep-sea organisms live in a completely different environment than surface aquatic organisms.
Next, conduct research on the following conditions in the ecosystem you chose. They influence the types of organisms that can live there.
geographical features
temperature
depth/light availability
salinity
pH
unique features that contribute to the ecosystem, such as other bodies of water that connect to it, unusual chemistry, and climate
Using the information you gathered, write a paragraph that describes conditions in the ecosystem.
Answer:
Places with latitudes closer to the Equator have hotter climates. Places with latitudes closer to the Poles have colder climates. This happens because the Sun's rays hit them more or less directly.
The Sun powers life on Earth; it helps keep the planet warm enough for us to survive.