Is birth mother one word or two?

Is birth mother one word or two?

1. Try not to use the term “birth mother” when the word “mother” will do. Sometimes it is necessary to use the term “birth mother” to make clear that the conversation is about a relationship altered by adoption, or to differentiate between different mothers in one child’s life.

What does geo mean?

Geo- is a prefix derived from the Greek word γη or γαια, meaning “earth”, usually in the sense of “ground or land”; as a prefix, it may also mean “global” or relate to the planet Earth.

What are biological factors?

Biological factors are microorganisms (bacteria, viruses, fungi and microscopic parasites), cell cultures, human endoparasites and components from microorganisms that can cause damage to health in humans.

What is the definition of biological control?

Biological control, the use of living organisms to control pests. A natural enemy such as a parasite, predator, or disease organism is introduced into the environment of a pest or, if already present, is encouraged to multiply and become more effective in reducing the number of pest organisms.

What is an example of a biological control?

An example of biological control is the release of parasitic wasps to control aphids. Aphids are a pest of plants and cause huge damage to plants as they remove nutrients from the plant. The parasitic wasp lays eggs in aphids, as shown in the movie.

What are some examples of biological control?

The plants, predators, and natural deterrents used in biological control are called biological control agents. When gardeners introduce lady bugs into their gardens to control aphid colonies, they’re practicing biological control — in this instance, the lady bugs are the biological control agents.

What are the disadvantages of biological control?

Disadvantages of biological control Biological control agents are expensive to find. The greatest expense is during the field survey and early testing stage which must be conducted overseas. Suitable agents may not even exist. Potential agents are also expensive to test for specificity.

What is the greatest risk of using biological controls?

Four risks demand attention: (1) direct attack on non- targets; (2) indirect effects on non-targets; (3) dispersal of a biocontrol agent to a new area, either autono- mously or with deliberate or inadvertent human assistance; (4) changed relationships between a control agent and a native species, particularly as …

What are the benefits of biological control?

Advantages of biological control are that no artificial substances are added, and that pathogens / animals that develop resistance against biological control agents are rare. Biological control is an important component of integrated pest management,(Integrated Pest Management).