Secondary consumers may be carnivores that eat meat or omnivores that eat both plants and animals.
<h3>What are secondary consumers?</h3>
Consumers in biology are organisms (heterotrophs) that uses other organisms for food in order to gain energy.
Consumers can either be primary or secondary. Primary consumers feed directly on plants, hence, are said to be herbivores.
On the other hand, secondary consumers feed majorly on primary consumers, making them carnivorous in nature.
However, secondary consumers may be carnivores that eat meat or omnivores that eat both plants and animals.
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To signal hunger, the physiological need for food, the digestive tract sends messages to the hypothalamus by way of hormones and nerves.
Answer:
ecological dominants
Explanation:
In an ecosystem, organisms of same and different species are usually found. However, some organisms appear too commonly than others in that particular ecosystem. These commonly observed organisms (plants and animals) due to their large numbers are called DOMINANT species. An ecological dominant species is that which numerically outshines its competitors in an ecosystem.
A species may be dominant because it is better adapted to certain processes than Its competitors e.g. getting resources, disease resistance etc. or even deters its competitors. Hence, they appear large in number. This is the case of the abundance of pinyon pine and juniper trees along the desert slope of the sierra nevada mountains in california. In that ecosystem, these two plants dominate, hence, will be referred to as ecological dominants.
Evolution overs over time such that the best traits are being passed on from successive generations in every species or populations. We can compare these different species from a common ancestor. Evidences include fossil evidence, genetic evidence, comparative anatomy and more. These are usually shown in phylogenetic trees. Most apparent differences between wolves and dogs are their anatomy or morphology. Fossils support these. Behavior between them are different especially in terms of mental differences.
Best answer is A.
DNA was first identified by Friedrich Miescher<span> in 1869 at the University of Tübingen.</span>
