Answer:
All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike prokaryotes, eukaryotic cells also possess internal membranes that encase their organelles and control the exchange of essential cell components.
Explanation:
The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
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B. natural selection
C. emergent evolution
D. divergent evolution
Answer:
The correct answer is option A, that is, convergent evolution.
Explanation:
The convergent evolution in evolutionary biology refers to the phenomenon in which the organisms that are not closely associated, that is, not monophyletic, autonomously evolve identical characteristics as a consequence of having to amend to ecological niches or identical surroundings.
For example, the evolution of lungs and gills that serves similar functions in distant organisms is an illustration of convergent evolution.
Answer:
A. Convergent evolution
Explanation:
If analogous or structurally different oragns performing similar function.. We call that convergent evolution.
Answer:
False
Explanation:
The hypotheses are conjectures, speculations, predictions about a certain phenomenon of nature and how it behaves. Hypotheses should be tested, which is usually accomplished through experiments.
Theories are well-founded explanations for describing events occurring in nature. They involve hypotheses already thoroughly tested, facts and laws.
A shell is considered as biotic (living) because it is a hard, rigid covering of many animals such as snail, sepia, pila, turtles, sea urchins. A shell is protective outer layer of these soft bodied animals. Shells are made of calcium carbonate in the form of calcite or aragonite crystallized in an organic matrix. Shells of other animals are composed of chitin, bone or cartilage. That's why a shell is considered as biotic (living).
Answer:
The correct answer is "because it came from something living".
Explanation:
In biology, a shell is defined as a protective structure of mollusks and crustaceans. A shell is considered to be biotic because it came from something living. Shells are not in fact alive as they are made of calcium carbonate and in some cases α-chitin, two non living materials. However, since mollusks and crustaceans are living beings, shells are considered biotic.
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condensation
precipitation
transpiration
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Choose all the answers that apply.
The speed of evaporation _____.
increases as temperature increases
decreases as temperature decreases
increases as surface area increases
decreases as surface area decreases
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Choose all the answers that apply.
Water is added to the atmosphere through _____.
condensation
precipitation
evaporation
transpiration
sublimation
--
Precipitation _____.
occurs evenly around the globe
happens immediately after evaporation
replenishes surface water sources
happens when water vapor changes into a liquid
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Which of the following locations would have the most humidity?
Desert with a few cacti.
Cave with no plants and many rocks.
Rainforest with many plants.
Snowy mountain top.
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Which of the following statements is true?
Water vapor helps keep the earth's heat from escaping into space.
Sublimation is the process by which plants release water into the air.
Most of the water vapor in the air comes from transpiration.
Evaporation from the oceans adds salt water to the atmosphere.
Answer:
Clouds form during condensation.
The speed of evaporation increases as temperature increases.
Water is added to the atmosphere through evaporation.
Precipitation replenishes surface water sources.
A rain forest with many plants would have the most humidity.
Explanation: