Use with Chapter 1.
Underline the answer that best defines the boldfaced word.
1. Organisms are spread throughout the biosphere, but it is a small layer of
Earth.
environment
region that supports life
2. Each living thing fits into its environment, thanks to adaptations.
characteristics for survival
instincts
3. Members of a species are similar in most ways but have individual difference
group whose members can produce offspring
group whose members look alike
4. Scientific classification of organisms is based on features.
grouping by differences
5. Bacteria live almost everywhere, including inside your body.
disease-causing germs
single-celled organisms
grouping by similarities



Answer :

1. The biosphere is a global ecological system that includes all living organisms, the lithosphere, the atmosphere, and the hydrosphere. The biosphere is a limited zone on the earth's surface where soil, water, and air interact to support life. Life can only occur in this zone. There are several sorts of life, ranging from fungus and bacteria to giant animals. The biosphere is defined as an area that contains all living species and their byproducts. It is crucial to ecosystems' survival, i.e., species' presence and mutual interactions. Furthermore, the biosphere is essential for climate management.

2. Living organisms adapt to their surroundings. This means that how they look, behave, are made, or life makes them well-suited to survive and reproduce in their environments. Giraffes, for example, have extraordinarily long necks that allow them to eat lofty vegetation that other animals cannot reach.

3. Lilac is the most miniature elephant, weighing little under 8,000 pounds, while Chana and Genny C each weigh about 9,000 pounds! Elephants are also distinguished by the size and shape of their tusks. Moki has short and stubby tusks, whereas Genny C has exceptionally long tusks. Take note of the elephants' distinct differences.

4. Taxonomy ideas aid in the biological classification of species based on similarities and differences. Taxonomy studies the identification, description, and variety of all living species, including plants. People are classified based on behavioural, genetic, and biochemical distinctions.

5. Bacteria are microscopic living organisms that can be found practically anywhere. They dwell on the earth, the oceans, the food we eat, and even our bodies. They existed on Earth long before any other organisms. Bacteria are so small that they can only be seen through a microscope. Temperature and pressure extremes can be tolerated by species. The human body is teeming with bacteria, with more bacterial cells than human cells. Most bacteria in the body are harmless, and some are even helpful. A small number of species cause disease.

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