Answer:
<h3>Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast</h3>
Because it is their religion and their belief
1) Ecology is the scientific study of the distribution and abundance of organisms, the interaction among organisms, and the interactions between organisms and their abiotic environment. Ecologists try to understand the inner workings of natural ecosystems and the species they contain.
2) Ecosystems have no particular size. An ecosystem can be as large as a desert or a lake or as small as a tree or a puddle. If you have a terrarium, that is an artificial ecosystem. The water, water temperature, plants, animals, air, light and soil all work together.
3) The biotic factors of an ecosystem include all the populations in a habitat, such as all the species of plants, animals, and fungi, as well as all the micro-organisms. Also recall that the nonliving factors are called abiotic factors. Abiotic factors include temperature, water, soil, and air.
4) For aquatic ecosystems, these factors include light levels, water flow rate, temperature, dissolved oxygen, acidity (pH), salinity and depth.
Hope this helped. ;)
Answer:
I believe the options are:
- Birds feed in berries produced by a tree. The birds receive a food source and the tree is able to disperse its seeds.
- An egret follows cattle in a field eating insects that are stirred up. The egret receives a food source and the cattle are unaffected.
- Abundance of host decreases.
- Abundance of both species increases.
- Ticks feed on the blood of a deer. The tick receives vital nutrients and the deer is left weakened.
- Abundance of parasite increases.
- Abundance of one species increases, and the other is not affected.
Species Interactions:
The correct species interactions are:
Parasitism:
3. Abundance of host decreases.
5. Ticks feed on the blood of a deer. The tick receives vital nutrients and the deer is left weakened.
6. Abundance of the parasite increases.
Commensalism:
2. An egret follows cattle in a field eating insects that are stirred up. The egret receives a food source and the cattle are unaffected.
7. Abundance of one species increases, and the other is not affected.
Mutualism:
4. Abundance of both species increases.
1. Birds feed in berries produced by a tree. The birds receive a food source and the tree is able to disperse its seeds.
Explanation:
Species Interactions:
Species interactions are relationships between different members of a community. The main types are:
- Competition
- Parasitism
- Mutualism
- Commensalism
- Predation
Parasitism:
A relationship between two organisms in which one organism (parasite) lives in or on the host, derives its nutrients from the host and in turn, harms the host. In the above examples, the ticks feeding on deer blood derive nutrients from the deer but harm the deer as a result.
Commensalism:
A species interaction that involves one organism deriving benefits from another but the other neither loses nor gains any benefits i.e. the other organism is unaffected. In the above examples, the egret uses the cattle to find food but in turn the cattle are unaffected.
Mutualism:
In mutualism, both the organisms receive benefits from the species interaction. In the above examples, the birds benefit from the tree by retrieving nutrients and in turn the tree benefits in the dispersal of its seeds.