a. Competition: Humans compete with all organisms for space.
b. Parasitism: Humans have many parasites: head lice, ticks, tapeworms, etc.
c. Mutualism: We have mutualistic relationships with all domesticated plants/animals.
d. Commensalism: Pigeons thrive in metropolitan ecosystems without really
affecting humans (except for being mildly disgusting).
Answer:Algae contributes to the phosphorus cycle
Explanation:Algae are organisms which have distinct chlorophyll and are autotrophic in nature .Most of them live in water.Algae include the Unicellular chlamydomanas and the multicellular sea weed.some algae are colonial and some are filamentuous.Algae possess chlorophyll, carotenoids and phycobillins as pigments.
Algae are important primary producers in the water bodies and produces a significant portion of oxygen.
Some algae eg diatoms are fossilized due to their glass cell wall and are known as diatomaceous earth, which has various uses such as abrasives,tooth paste and as filters.
Red algae produces calcium carbonate which forms coral reefs.
The products of some algae are used as solid gels and source of agar for microorganism culture.
Solvency, cohesion, adhesion, hydrogen bonding, chemical reactivity, and thermal stability are all important properties of water.Water has the specific cappotential to dissolve many polar and ionic materials. This is vital to all residing matters because, as water travels thru the water cycle, it takes many precious vitamins along side it! Water has excessive warmness capacity.
Water's enormous functionality to dissolve a lot of molecules has earned it the designation of “regular solvent,” and it's far this cap-potential that makes water such a useful life-maintaining force. On a organic level, water's position as a solvent allows cells shipping and use materials like oxygen or vitamins.
A water molecule has 3 atoms: hydrogen (H) atoms and one oxygen (O) atom. That's why water is every so often known as H2O. A unmarried drop of water incorporates billions of water molecules.
To learn more about properties of water here
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Passive Transport: Simple Diffusion. Diffusion across a cell membrane is a type of passive transport, or transport across the cell membrane that does not require energy. ... Molecules that are hydrophobic, just like the hydrophobic region, can pass through the cell membrane by simple diffusion.
