The benefit of using a model is that : ( B ) provides a visual guide for abstract concepts
<h3>Definition of model</h3>
Models helps with the visualization of concepts or objects which cannot be easily seen or felt, It helps with the communication of ideas and predictions by scientists. Models represents abstract concepts which cannot be explicitly explained without the aid of a model.
Hence we can conclude that the benefit of using a model is that it provides a visual guide for abstract concepts.
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<span>Echinoderms are invertebrate animals
with radial symmetry. They reproduce mostly through external fertilization.
They have endoskeletons that are made up of hardened plates. Examples would be
sea stars, sea urchins and sea cucumbers. </span>
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The simplest invertebrate animal is
the sponge. They have no organs and are considered the most ancient member of
the kingdom Animalia. It was once thought to be a plant but the way it takes in
food qualified it to be an animal.
Animals in the phylum porifera, more
commonly known as sponges are marine animals. They are mostly asymmetrical and
they self-fertilize because they are mostly hermaphrodites. In other words,
eggs and the sperms are produced by the same organism.
Fish are vertebrate animals that have
bodies that are bilaterally symmetrical. They reproduce through external
fertilization. They belong in the class called Osteichthyes.
<span>Cnidarians exhibit radial symmetry.
They reproduce both asexually and sexually. Budding however is the most
important form. They are invertebrates that are known for their central body
cavity and stinging cells. Examples would be the jellyfish and the hydra.</span>
Mammals are vertebrates with
bilateral symmetry. They have endoskeletons and are known to reproduce sexually
through internal fertilization. They give birth to live young. The only mammal
that is known to lay eggs is the platypus.
Arthropods are invertebrates with
exoskeletons, jointed appendages and segmented bodies. Their bodies show bilateral
symmetry. They reproduce sexually. Insects are arthropods, so are crustaceans,
arachnids and the like.
Papaya contains the enzyme papain that breaks down collagen and other connective tissues in the meat. Papaya is often used as a tenderizer or used in marinating meat.
Correct answer: A. True
Explanation:
The dictionary definition of a "risk" is that someone or something of value is exposed to danger, harm, or loss (<em>Oxford Living Dictionaries)</em>.
Having said that, we should also note that without risk, there often is little or no reward. Sometimes taking a risk is necessary in order to achieve a gain. If I hide all my money under my mattress to avoid the risks associated with investing money in banks or the stock market, I don't gain any interest or growth on my dollars. If I won't get in a car or on an airplane because of the risks associated with automobile travel or air travel, I isolate myself and don't get to visit people and places beyond my immediate neighborhood.
Risk assessment and risk management will mean that we will assess the real risks of situations and activities, and balance those against potential rewards. We will take appropriate precautions and safeguards before taking a risk. For instance, if a child wants to learn how to ride a bike (which will bring the rewards of a fun and healthy activity), parents will make sure the child wears a helmet and possibly knee and elbow pads. They will start with training wheels or by going alongside to guide the bike before having the child attempt riding fully on their own.