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Answer: Option B.
Help control weeds and insect pests.
Explanation:
Insect are the largest group of organisms on Earth. They belong to the phylum arthropoda and class insecta. They have hard exoskeleton, antenna, they have three pairs of legs and their body is divided into head, thorax and abdomen.
Insects are biological resources in that they help control weeds and insects pest.
The insects are use as weed control in that they feed on the weeds i.e they use the weeds as food there by absorbing the nutrients for weeds development, which lead to their inability to survival. Some canivorous insects feed on insects pest i.e use they as food, thereby reducing their harmful effects in the ecosystem.
Answer:
a) The positive and negative charges on water molecules form strong attractions toward ions and other charged particles.
Explanation:
Water molecules have a polar arrangement of oxygen and hydrogen atoms. Hydrogen atoms have a positive charge and oxygen has a negative charge. This property allows water to be attracted to many substances. The water molecules can disrupt the attractive forces between components of a molecule and thus dissolve it.
Correct answer: Always parasitic, contains DNA and RNA, cannot reproduce on their own
A virus is a small microscopic parasite that cannot reproduce on their own, it can only replicate them self by hijacking the host machinery. Most of the viruses contain either DNA or RNA as the genetic material.
There are many viruses that are known to cause diseases to the human, one of the common virus is an influenza virus that causes flu. other example includes Ebola, Hepatitis, Polio virus
Answer:
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Explanation:
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