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A “biological annihilation” of wildlife in recent decades means a sixth mass extinction in Earth’s history is under way and is more severe than previously feared, according to research. Scientists analysed both common and rare species and found billions of regional or local populations have been lost. They blame human overpopulation and over consumption for the crisis and warn that it threatens the survival of human civilization, with just a short window of time in which to act.
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older
the deeper you dig into the earth, the farther back into history you are going.
Neuron is a cell of the nervous system that is involved in carrying of impulses between the nervous system and the rest of the body. There are three types of neurons namely; relay neuron, motor neuron and the sensory neuron. Neuron is made up of various parts that enhance is activity in transmission of impulses/information which includes, dendrites, cell body, axon, myelin sheath among others. The conduction of information in the neuron starts from the Dendrites, then to the cell body, to axon and then to synapse where a neuron links with another and the process is repeated. Therefore; the correct answer is C
A gene is a small segment of DNA that contains the information required in order to build a protein!
Control group
Explanation:
Experiments are usually designed so that the differences between the experiment and control groups can be observed.
- The experimental group is the group that follows the details of the hypothesis where variables are changed to see their causes and effects.
- The control group is the standard by which the experimental group is compared with.
- The variables are being tested for in the experimental group to see how they are changing .
learn more:
Controlled experiment brainly.com/question/1621519
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