1. soil characteristics
2. how far away the closest untouched ecosystems are
3. the habitat's remaining species
4. the presence of fungi as soil symbionts
Ecological succession refers to the process of changing in an ecological community's species composition through time. The time frame might span several decades or fewer (for instance, following a wildfire).
The community grows through an increase in complexity from a small number of pioneer plants and animals to a stable or self-sustaining climax community. The effects of established species on their own settings serve as the "engine" of succession and the reason why ecosystems evolve. Living has the effect of changing one's surroundings, sometimes subtly and sometimes blatantly.
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Answer:
This is an example of an experimental design.
Explanation:
Experimental design in research involves controlling the variables in order to prove the hypothesis. In an experimental design there must be an experimental group, that in this case is the group that received an herbal supplement, and a control group, that was only administered placebo. By having a control group, both groups can be measured and compared at the end of the experimental phase, to measure the influence of the independent variable.
As he slowly gets up to investigate, his heart begins to race, his mouth is dry, and he begins to sweat; his<u> "sympathetic nervous system" </u>has been activated.
The sympathetic nervous system (SNS) is a piece of the autonomic nervous system (ANS), which likewise incorporates the parasympathetic nervous system (PNS).
The sympathetic nervous system ordinarily capacities to create restricted alterations, (for example, perspiring as a reaction to an expansion in temperature) and reflex modifications of the cardiovascular framework. Under states of pressure, be that as it may, the whole thoughtful sensory system is enacted, delivering a prompt, boundless reaction called the fight or-flight reaction.
Answer:
- Written laws
- Architectures resembling town hall
Explanation:
One example of written laws that founded by Archeologists was the Stele of Hammurabi's codex that found in 1901. It's a set of written laws that originated from Ancient Mesopotamia. The existence of law indicates that ancient society had a governing body that create legislations to maintain the order in society.
On top of that, a lot of ancients civilizations had some form of architectures that's designed to accommodate a lot of people with one podium in center. Those architectures is predicted to be used as a place where government officials communicate with the people about legislations.
Answer:
cross-sectional study
Explanation:
A type of study in which data is gathered at one time from groups of participants who represent different age groups is an example of a cross-sectional study. A cross-sectional study is a type of study design that involves subjects who vary in the variable of interest such as age but have a common characteristics and observations are made at a single point in time.
In the scenario from the question, the variable of interest is most likely the effect of varying age groups on personal health. The variable of interest, age group varies but the population has a common characteristic which is that they are Americans and the study is done at a particular time and not spread out as in cohort studies. This is an example of a cross-sectional study.
