A controlled experiment is a type of experiment which only changes one variable at the time. An univariate controlled experiment is known for changing only one variable, there are also cased of controlled experiments where multiple variables get changed (multivariate controlled experiments) and in such cases multiple things will change.
Answer:
The basic parts of a landfill, as shown in Figure 3, are: Bottom liner system - separates and from groundwater. (old and new) - where the is stored within the landfill. Storm water system - collects rain water that falls on the landfill
Explanation:
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Stratigraphic correlation is a process of matching up strata from various sites through the analysis of physical, chemical and other properties. It is also a study that involves establishing geochronological relationships between areas concerned with geological investigation of many succession. It is carried out by studying the different patterns and location of rocks on the earth so as to understand their relationships and age of the layer.
Answer:
The organisms reproduce in two ways:
Asexual Reproduction– In this process, only a single parent is involved and no gamete formation takes place.
Sexual Reproduction– In this process, two parents are involved and gamete formation takes place. Meiosis is an important step in sexual reproduction.
Key Points on How do organisms reproduce
- Reproduction is the process of producing new individuals of the same kind.
- Organisms reproduce in two ways- asexually and sexually.
- Asexual reproduction does not involve the fusion of male and female gametes. This takes place in bacteria, amoeba, hydra, etc.
- Sexual reproduction involves the fusion of male and female gametes and can be seen in humans and many animals.
- Fission, budding, vegetative propagation, fragmentation are some different types of asexual reproduction. It does not require any reproductive organs.
- Sexual reproduction involves the reproductive organs of male and female.
