In The Omnivore's Dilemma, for example, he examined four different types of food production.
Lobstein has calculated the cost of 100 calories of food energy from different types of food.
The polyp hooks on to a rock, and the temperature and different types of food make the polyp grow faster.
One summer, I tried to see what would happen if you fed tadpoles different types of food.
But then they discovered that very different types of food would be cooked on it.
We get different seasonal foods – less fresh vegetables in winter, for example – and people eat different types of food".
The emergence of ceramic cooking pots made it possible to customize individual containers that suited different types of food.
The study said research should be done to determine the appropriate level of salt for different types of food items.
"Tuna is expensive," she says, "but fish is good for you; I like to try him on different types of food.
Owners may have to experiment with different types of food to determine which are best suited to their dogs.
Orangutans are predominantly ripe-fruit eaters, although they consume more than 400 different types of food, including invertebrates and, on rare and opportunistic occasions, meat.
