In order to keep the temperature inside a space craft in a safe level, they have the thermal control system. It is able to keep the space craft's temperature in a safe and acceptable temperature. It is composed of passive thermal control system and active thermal control system that ables to protect equipments from the temperature and over heating.
The West Nile virus is a fatal neurological disease in humans.
Answer:
Here is your Answer..
Explanation:
A, A water molecule consists of two atoms of hydrogen linked by covalent bonds to the same atom of oxygen. Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds.
B,The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
Water is a Universal Solvent: Everything dissol...
Oxygen is electronegative: A water molecule c...
Hydrogen Bonds: Opposite charges attract one
<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.
In what organisms are you referring to?