Answer:
Explanation:
There are indirect threats of invasive species as well. Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
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Answer:
helps us to learn about different kinds of plants and animals, their features, similarities and differences.It enables us to understand how complex organisms evolve from simpler organisms
Explanation
step by step
Science follows the evidence where it leads, and pseudoscience starts with the conclusion, and works backwards to confirm it
Answer: Cell wall; plant cells have a cellulosic cell wall, which is absent in the case of animal cells. The plasma membrane serves as the outermost boundary for an animal cell. Chloroplast: The presence of chloroplast enables photosynthesis in plant cells and it is absent in animal cells.
Explanation:
Answer:
Observers ahead of the wave observe an apparent increase in wave frequency
Explanation:
This is the Doppler Effect. The frequency of a wave increases when the source approaches the observer and decreases as the source recedes.
B, C, and D are wrong. Observers behind the source notice a decrease in frequency.