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other molluscs have a radula which is lost in the bivalves, they also have a reduced head and nervous system. most are also lamellibranchs (filter feeders) which is why they have lost the radula (used for rasping plant life by herbivores such as the gastropods).
amphibians
When life gives bivalves sand, they make pearls.
Okay- They use there tentacles and eat brains
The population increases.
Turtles are adapted to an aquatic life, spending almost all their life at sea. They only come to land to lay their eggs - which need to be laid out of water so they can develop.
Plants and animals have adapted to feed, reproduction, and life on land by utilizing oxygen or carbon dioxide that is absorbed through lungs or via photosynthesis rather than using gills. They have adapted with fur to keep them warm and legs to move them safely on land. Plants have adapted to utilize sunlight and animals to reproduce.
No, because frogs still need water to reproduce. That said, an adult frog can live on land its whole life and be okay.
Most live in the ocean, or along the shore. Some crustaceans, such as wood lice, have adapted to life on land.
They use pollen to fertilize seeds which is dispersed through the wind instead of water.
lay shelled eggs
Mammals,birds and reptiles are fully adapted to life on land. Fish live in water and amphibians start their life in water, then live on land.