Many common organisms are now rare, such as whales, sharks, seals, predatory fish, sea turtles, grazing fish, predatory invertebrates, zooplankton, sea cows, oysters, seafloor plants, and sea grass. Jellyfish are now abundant. People have been added to the ecosystem. 5.

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What was the ratio of floating algae to sea floor algae in 1700? Floating algae and sea floor algae levels were about equal in the ecosystem in 1700. 2.

Explain. Thick layers of floating algae block the sunlight from reaching the sea floor algae and plants that grow down below. Without sunlight the seafloor algae and plants cannot grow.

Most species are abundant. The only groups that are rare are jellyfish, worms/amphipods, floating algae, microbes, and detritus.

Algae are primary producers: by using inorganic ions, CO2, water and solar energy the complex organic molecules are produced. Oxygen is released in this process. Algae, cyanobacteria and plants indirectly produce all food and all oxygen for all living organisms on our planet.

Plants and other producers such as algae use these nutrients, which include carbon, nitrogen and minerals. Organisms that act as decomposers include fungi, bacteria and other microbes. Scavengers eat dead animals and are also considered consumers.

Mold is a foul-smelling and potentially dangerous fungus most commonly associated with porous materials like wood, plaster, grout and fabrics. Under the right conditions, though, mold can also grow on semi-porous and nonporous materials like glass, metal and also plastic.

Wear rubber gloves and clothing that can be easily cleaned or discarded. To prevent eye irritation, wear goggles that do not have ventilation holes. Wear an N95 or HEPA respirator mask purchased from a hardware store to reduce the mold spores you breathe in.

Protecting Yourself During Mold Cleanup

1. Avoid breathing in mold or mold spores. In order to limit your exposure to airborne mold spores, you may want to wear an N-95 respirator, available at many hardware stores and from companies that advertise on the Internet.
2. Wear gloves.
3. Wear goggles.

Mold spores stay airborne indefinitely, but you should know that if a damp spot is unattended to for 24 to 48 hours, then it’s likely that the mold spores in the air will congregate on that one spot, forming more mold.

Surgical masks do not protect against breathing in very small particles such as dust or mold because they do not fit tightly to the face, allowing air particles to leak in around the edge of the mask.

N95 respirators are a type of particulate mask with a built-in filtration system that — when fit securely against your face — will prevent small mold particles from reaching your nose and mouth. They are also the only mold mask approved by the National Institute for Occupational Safety and Health (NIOSH).

If there is mold in your home (or you suspect that mold growth has occurred), protect your mouth and nose against breathing in mold by wearing at least a disposable, NIOSH-approved N-95 filtering facepiece respirator (often called an “N-95 respirator” or “N-95 mask”).

An N95 mask protects you from breathing in small particles in the air such as dust and mold. It is designed to filter out at least 95% of the dust and mold in the air.

The NIOSH-approved N95 respirators must pass the filter performance tests listed in the NIOSH’s regulations. Smell is quite another matter. Smell detects molecules via our olfactory receptors. Sulfur with an approximate molecule diameter of 0.0004 μm is detectable by smell and could certainly pass through an N95 mask.

Extended use The CDC reports that prolonged N95 mask use (including between patients) can be safe for up to 8 hours, and encourages each user to review each manufacturer’s recommendations prior to following this strategy.