Answer:
the answer is d
Explanation:
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Answer : d) parasite
A parasite is an organism that attaches itself to a host (another organism) and while the parasite benefits, the host is being harmed gradually. This is a symbiotic relationship where only one benefits and the other is hurt.
Rain and thunderclouds are found with high pressure
<span>Aplysia is a marine gastropod mollusc which is an often used model organism in neuroscience, especially on the cellular biology of learning and memory. What makes them easy to work with are their giant neurons, which are one of the largest. Aplysia neurons are suitable for studies of how neurons and neural circuits control behaviours. Its defensive reflex has been studied because it is mediated by electrical synapses, which allow several neurons to fire synchronously.</span>
