Answer: 1364
Explanation:
Am Gen Students
1 1 4
2 16
3 64
4 256
5 1024
1364 Total
The oldest rocks of the ocean floor are approximately 200 million years old. These rocks are found in the western Pacific Ocean and are part of the western Pacific seafloor, known as the "Western Pacific Basin." This area contains some of the oldest oceanic crust on Earth.
The age of oceanic rocks is related to the process of plate tectonics, where new oceanic crust is continually formed at mid-ocean ridges through volcanic activity. As the oceanic plates move away from the ridges, they carry with them the older rocks towards the edges of the ocean basins. Over time, these older rocks get pushed back into the Earth's mantle at subduction zones, where tectonic plates converge.
This recycling process limits the age of the oceanic crust, and as a result, the oldest oceanic rocks we find today are generally around 200 million years old. This age is significantly younger compared to the age of the continental rocks, some of which are billions of years old.
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Answer:
Yes
Explanation:
definitely algal bloom is a significant change. What is more important is how the bloom affects other aquatic life. The bloom forms a dense "blanket" of growth, which as it grows rapidly and dies, decomposes. Bacteria feed on this rich organic stuff and use up the dissolved oxygen in the water. As the oxygen levels drop, fish and aquatic insects die. This is the result of the algal bloom.
Protozoans can move using pseudopodia, cilia, and flagella, but not by budding. The correct answer is d. budding.
You are absolutely correct, and I appreciate the clarification.
Protozoans employ various methods for movement, including pseudopodia, cilia, and flagella, with budding having no connection to their locomotion.
Pseudopodia are temporary extensions of the cell membrane utilized by organisms like Amoeba for both movement and prey capture.
Ciliates utilize numerous hair-like structures called cilia for propulsion, while flagella are whip-like structures used by certain protozoans like Euglena.
Importantly, budding is a distinct process related to asexual reproduction and not a means of protozoan locomotion.
Therefore, the correct answer is d. budding.
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