Your answer would be: A. because scientists use what they have to create a theory, a theory is pretty much an educated guess is what a teacher would say, the theory would need to have evidence in order for it to be an educated guess. The scientist would have to come up with an explanation in order for the theory to work, or be an educated guess.
At the top of the body of a water, there is a lot of light from the sun, which also means a lot of solar energy. This allows for a fruitful photosynthesis.
In contrast, at the bottom of the water, there isn't as much, or sometimes any, sun light. Because of this the organisms at the bottom of the body of water
<span>D. must rely on other means than photosynthesis
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Answer:
Explanation:
(a) interspecific competition: It is a kind of competition that occurs between the individuals that belong to different species competing for the same resource in an ecosystem. For example, lion and tiger populations thriving for the same type of prey that is deer population.
(b) intraspecific competition: Interspecific competition occurs between the members of the same population competing for limited resources. For example, trees of the same species competing for the sunlight and soil nutrients.
(c) predation: It is an ecological interaction that occurs between the superior or inferior species. One animal kills other animal to obtain it as a source of food. For example a tiger kills a deer to obtain it as food.
(d) territoriality: It is a quality of a species or a population of species to obtain the geographical area to an extent or limit where no other species or population can intrude. For example, lion shows the territory behavior to protect their children from predators.
(e) symbiosis: It is a type of biological interaction in which two species lives in association with each other. This interaction can be mutualistic, parasitic or commensalistic. For example, a lice sucking blood from animal is an example of parasitic symbiosis.
Since the wheelbarrow is filled with soil, that adds more weight to it. Which means you would need to use more strength/force.
When the wheelbarrow is empty, it has less weight so you would use less force.
Fertilization. It is defined as the fusion of male gamete with the female gamete
