According to the colonial hypothesis, choanoflagellates and modern animals have a common ancestry.
This view is supported by molecular data. Choanoflagellates are a group of colonial, unicellular eukaryotes that thrive in free-living settings and are regarded to be the closest living relatives of animals. Choanoflagellates are collared flagellates, and at the base of each flagellum, they have a collar made of interlaced microvilli that resembles a funnel. Both asexual and sexual reproduction are possible in chonoflagellates. One apical flagellum, an ovoid or spherical cell body that is 3–10 m in diameter, and a collar of 30–40 microvilli around it make up their distinctive cell shape.
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Producing gametes I’m pretty sure
I’m pretty sure it’s the left ventricle but if not then choose another answer
Let's take the example of touching something hot:
there's sensory nerves in all our body, including our hands and fingers. When a finger touches something hot. a nerve impulse will be born due to the stimulus and will be transmitted from the sensory nerves in the finger to the CNS (central nervous system)
The CNS will integrate the information, then transmit nerve impulses through the motor nerves which goes to the muscles of the finger (which are skeletal muscles) to order them to contract, to avoid the contact between the finger and the hot thing. (the same map for the blinking eye)
Polluted water and smog combine to form rain clouds that carry sulphur dioxide and nitrogen oxides which damages forests and vegetation, especially in eastern Europe.
- The deep orange-red gas nitrogen dioxide and the smoke-like particles that accompany it are what give smog its colour. In this demonstration, nitrogen dioxide is created by an electric discharge in the air and turns into acid rain when it is sprayed with water mist.
- Acid rain's primary ingredient is sulfuric acid, which is created when sulphur dioxide reacts with water, air, and other gases. Deforestation can result from acid rain. waterways become more acidic, harming aquatic life.
- High quantities of nitrogen dioxide can damage leaves, slow down growth, or lower crop yields in vegetation. Nitrogen dioxide can react with surfaces, fade and discolour furniture and fabrics, and diminish visibility.
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