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satela [25.4K]
3 years ago
12

Help, I don't know the answers for these

Biology
2 answers:
Burka [1]3 years ago
5 0
25. A pheromone is a chemical some animals can produce that changes the behavior of other animals in that same species
professor190 [17]3 years ago
4 0

For #25:

Most bivalves are filter feeders, using their gills to capture particulate food such as phytoplankton from the water. The protobranchs feed in a different way, scraping detritus from the seabed, and this may be the original mode of feeding used by all bivalves before the gills became adapted for filter feeding

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