Not to humans (unless you're allergic) or frogs, I don't know about Toads though, but I assume it's not.
The tomato. It wasn't until the mid1800's when it was shown it wasn't poison. They had the name of " poisoned apples."
The possessive form for the singular noun lettuce is lettuce's.
romaine lettuce is different because it is much fresher than reg lettuce.
The noun lettuce has varied usage in the plural. Traditionally the usage is "three heads of lettuce", but the alternative "three lettuces" has become very common during the last century. The collective noun is always "I like lettuce" or "this farmer grows lettuce".
The word "lettuce" is a noun.
No, lettuce has leaves.
lettuce with butter on it
Lettuce
Iceberg lettuce is quite delicious.
Rabbits enjoy eating dark green leaves. So romaine lettuce, spring greens, broccoli leaves etc. They also like carrots but should only be given them in moderation!
According to US FDA/CFSAN, the pH of lettuce is as follows: Lettuce 5.80 - 6.15 Lettuce, Boston 5.89 - 6.05 Lettuce, Iceberg 5.70 - 6.13 hope that'll help =)
Yes, lettuce does have fruits but the part of the lettuce that we consume is the leaves. However, for the fruit of the lettuce plant to be classified a citrus fruit, it must have citric acid. Since it does not, it is not a citrus fruit.