Why might an overfishing of herring lead to an increase in populations of sea urchins?
An overfishing of herring can disrupt the food chain and remove a key predator of sea urchins. With fewer herring to feed on sea urchins, their populations can increase unchecked leading to ecosystem imbalance and potentially to overgrazing on kelp forests where sea urchins feed.
Cnidarians first paralyze their prey with stinging cells on their tentacles then they slowly move the food up into the bell to digest . They have no distinct mouth or anus so the food goes in and out around the same place.
How do you use diatoms earth on carpet?
We had a huge flea problem upon moving into our house, I guess the old owner had some issues. We found out that Diatomaceous Earth (DE) worked great for getting rid of them and was nontoxic. We got a couple of masks and cleared out the house so that the powder was not breathed on by any one, when you spread it the powder is so fine that a dust fills the and while it is non toxic you don't want to breath it in because it will irritate your nose, throat and lungs. I also recommend some goggles.
After I spread it on I used the vacuum with the hose disconnected to 'beat' the powder deeper into the carpet. Then I let it sit for a while and vacuumed lightly. It worked great! I applied it twice, the second time a week later just to be sure.
Make sure you do some research before this just to be on the safe side. I would also try to vacate the area for a while after laying it down and after vacuuming. Also, use an old vacuum if you can as the powder is so fine it clogs the vacuum really easy.
This was not an easy task but with a little effort it definitely beats having to deal with fumes and residue, although I would recommend covering anything electronic and doing a thorough cleaning afterward. Hope this helps!
How do most primary producers make their own food?
Most primary producers, such as plants, algae, and some bacteria, use photosynthesis to make their own food. They use sunlight, carbon dioxide, and water to produce glucose (sugar) and oxygen. Some primary producers, like certain bacteria, can also use chemosynthesis where they acquire energy from chemical reactions to make food.
Which segments lack nephridia?
In an earthworm, nephridia occur in all body segments except the first three segments. Integumentary nephridia are V-shaped and lack nephrostomes.
Why is there so much diversity among invertebrates?
Insects are diverse in the animal kingdom I believe for several reasons.
1. Insects typically have a short life cycle, and so they go through many generations in a short period of time. This allows fow an increased rate of mutation.
2. Insects are low on the food chain, and so have developed many diverse survival strategies for dealing with predation.
3. Insects have been on the earth longer than most other animals, ( like reptiles, mammals birds etc.) and so have had the time to obtain a greater amount of diversity.
4. Insects are typically biologically simpler organisms than other animals, and so they are easier for ol' mother nature to make (so to speak).
5. Insects are small, and so each individual uses fewer resources than a larger animal. This allows for a greater population density in any given natural area. A bigger population usually means a greater amount of genetic diversity.
I'm no entomologist but I think those are some good reasons to start out with.
What is a scientific name for diatoms?
The scientific name of Diatom is Bacillariophyceae. Diatoms are unicellular algae that appears as colony shaped like filaments or ribbons, fans, zigzags, or stars.
A smaller group of invertebrates that shares characteristics?
Snails and slugs are a smaller group of invertebrates known as gastropods. They have a soft body, usually protected by a shell, and move by producing mucus to glide along surfaces. The majority of gastropods are marine, but some are also found in freshwater and terrestrial habitats.
No, diatoms are not vascular plants. Diatoms are a type of single-celled algae that possess a cell wall made of silica, while vascular plants are higher plants that have specialized tissues to transport water, nutrients, and produce seeds for reproduction.
What does a tree hopper do to the enviroment?
Tree hoppers play a role in the ecosystem by feeding on plant sap and helping to regulate plant populations. They can also serve as a food source for other animals, helping to maintain biodiversity. However, in large numbers, tree hoppers can damage plants by sucking out too much sap, which can weaken or kill the plant.
Diatoms are a major group of eukaryotic algae, and are one of the most common types of phytoplankton. Diatoms occur in virtually every environment that contains water. This includes not only oceans, seas, lakes and streams, but also soil.
Diatoms slime molds and green algae are what?
Diatoms, slime molds, and green algae are types of protists. Protists are a diverse group of eukaryotic organisms that are not plants, animals, or fungi. They can be found in various habitats, from freshwater to marine environments.
What arthropod group has a body divided into a cephalothorax and an abdomen?
The arachnids group has a body that is divided into a cephalothorax and an abdomen. This group includes spiders, scorpions, ticks, mites, and more.
Where do you find the sea urchins on my sims kingdom for wii?
Im up it the part where i need the sea urchins for tobors scrool . and ive been looking every where and I think you can get them by fishing in either rocket reef or the nature perserve. if not just wait till you get to the other islaands!
The most successful of the invertebrates phyla with respect to the numbers of species is?
The most successful invertebrate phylum in terms of species diversity is Arthropoda, which includes insects, spiders, crustaceans, and other related groups. Arthropods make up the majority of known animal species, with over a million described species and estimated to make up around 80% of all animal species. Their success is attributed to their diverse body plans, ability to adapt to different environments, and evolutionary innovations.
Water bugs are freshwater insects that live along the water's edge and are capable of delivering a painful sting in self-defense. They are long, flat, oval-shaped insects with six legs, including two smaller front legs that they use to catch and hold prey.
What are some characteristics of diatoms?
· A diatoms silica covering is called a frustule
· Fossil evidence suggests that diatoms originated during, or before, the early Jurassic Period.
· Some species of diatoms can reach up to 2 millimeters in length.
ill post more later
What are adaptations of the giant green sea anemone?
Even though an anemone is a simple animal, they have many adaptations. If an anemone feels threatened it can retract itself completely into its base. The anemone also has tentacles that are filled with a toxin that will either sting an enemy or paralyze its prey.
What are the economic importance of cnidarians?
Phylum coelenterate has been divided into phylum cnidaria and phylum ctenophora. They are important because many medicines are created using material from each phylum.
Where do you buy diatom dust xr?
you could try twenga, they seem to have alot of great deals on at the minute and have a wide stock of produce so you should give it a go?
http://www.twenga.com/dir-Garden-DIY
-- previous poster, perhaps an employee of twenga? Diatom Dust XR is merely a trade name. I just bought some from Tallman Scientific, is bulk freshwater diatomaceous earth repackaged in a ziploc bag and taped up with clear tape and a home-printed label. But I presume it is actual diatomaceous earth, which is also available, in similar repackaged form, in many places on the Internet, though not, apparently, anywhere in New York City retail stores. They make it sound so flashy, and if you get it from them the "bed bug barrier tape" is simply double-sided duck tape. I tried putting diatom dust xr on top of it, which they don't talk about, but we'll see how I fare. I think, touch wood, that I'm winning the battle so far.
Good luck
How do bacteria in the sea help nourish diatoms?
It is the other way around. Consider that when any one cubic meter of Ocean bottom is obtained [to be sampled] - in any Ocean and at any depth - one cubic meter of Bacteria is obtained.
Photosynthetic organisms such as blue-green algae, diatoms and phytoplankton need primarily - aside from a few minerals - CO2 and (En) Sunlight; both mostly available at the Ocean's surface.
What is the mesoglea of a cnidarian?
It's the jelly-like substance that is found between the two layers of cells in a cnidarian. The mesogea is not in all cnidarians though
Diatoms have double shells made of what?
uf you don't know so why uyou to go diatoms double shells make of is gul bebe qandol Jan ast
this answer is by gulab zo
Why are roundworms invertebrate?
Roundworms are classified as invertebrates because they lack a backbone or spinal column, which are defining characteristics of vertebrates. Instead, roundworms have a simple, unsegmented body structure with a tough outer cuticle for protection.
Anemones close up to protect themselves from predators, changes in water conditions, or disturbances. By retracting their tentacles into their body, anemones can reduce their vulnerability to threats and conserve energy until conditions are more favorable.