Answer:
There is no mixing of oxygen-rich and oxygen-poor blood.
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The right atrium and right ventricle of the human heart pump oxygen-poor blood to the lungs and the left atrium receives oxygen-rich blood. They never mix.
B. several distantly related species develop similarities.
C. a species evolves at a slow, steady pace.
D. a species has periods of little evolution interrupted by periods of rapid evolution.
Answer: The correct answer is-
C. a species evolves at a slow, steady pace.
Gradualism can be describesd as a pattern/ theory of evolution by which already existing species give rise to new species by means of slow/ gradual and steady changes instead of major and abrupt changes.
Over long period of time, the small changes (that are beneficial for their survival) result in new species.
Example- Tiger that is evolved pattern of stripes ( which give them better advantage to hide in tall grass).
Thus, option C) a species evolves at a slow, steady pace. is the right answer.
The answer is False.
The toxic gases released during fires are classified into two broad categories, asphyxiant gases such as cyanides, hydrogen sulfide and carbon oxides (carbon monoxide and carbon dioxide) resulting in central nervous system depression and gases. irritants such as chlorine and its derivatives, aldehydes and nitrogen derivatives causing caustic lesions of the respiratory mucosa. In total several hundred, toxic gases have been identified. It is therefore not possible to treat them all in this presentation, so only the most important by their dangerousness will be detailed.
During a fire, the oxygen in the ambient air is consumed by the combustion of the materials. In a confined space like a house or an apartment, its fall can be extremely fast not exceeding a few minutes.
Living things respond to the environment
Living things reproduce
Living things grow and develop
Living things share a universal genetic code
Living things maintain homeostasis
Living things obtain and use materials and energy to grow, develop, and reproduce
Living things change/evolve over time
Answer:
A,C,D,E
Explanation:
Answer:
What is best definition of biology?
The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.
Explanation:
A person does have basic human rights and one is the freedom of expression. Though this is the case, we should understand that our right to freely express ourselves (from political to religious views), it does not necessarily give us the right to impede another person’s. A play with words can easily hurt or even harass other people, and in return may be a form of human right violation.