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When did animals with hard protective skin first climb out of the sea and walk on land?
The first air-breathing animals appeared during mid-Palaeozoic era (Era of ancient life) and included invertibrates such as scorpion-like arachnids and wingless insects, both possessing hard exoskeleton. The first reptiles (characterized by hard, dry epidermal scales) diverged from the then-dominant amphibians in the Carboniferous period (345 million years ago) of the Palaeozoic era.
What else can I help you with?
Which animal have hard hooves?
AntelopeCattlePigsHorsesZebraYakBisonBuffaloDonkeysMulesGiraffeGnuSheep and goats don't have hard hooves because they are animals that like to climb. Bighorn sheep and mountain goats are a good example of animals that have softer hooves than those animals listed above.
What is a protective shell?
A protective shell is a covering that provides defense or security. In nature, it refers to the hard outer layer that certain animals like turtles and snails have for protection. In technology, a protective shell could be a case or enclosure designed to shield a device from damage.
What does Lucas Till tell Miley Cyrus in the Hannah Montana movie about life being a climb?
well first of all lucas told miley life was a climb because life was always hard and you always had to climb through life! And life really is a climb i have been through some hard stuff in my life and i am only 11!!well i love you miley cyrus.
Is Mt Vernon hard to climb?
very
Is mount everest the hardest mountain to climb?
No Mount Everest is not the hardest mountain to climb, there are many mountains that are very hard to climb.
Another word for tried very hard?
Persevered is what I would use. Ex. I tried very hard to climb a mountain to I persevered to climb a mountain
What is an exoskeletin?
An exoskeleton is a hard outer shell or protective covering found on the outside of certain animals, such as insects and crustaceans. It provides support and protection for the animal's body and organs.
Do cheetha's climb tree's?
Cheetahs can climb trees, but like cats, they have a hard time getting down
Is mount Shasta very hard to climb?
yes
What is the meaning of the word hooves?
Hooves are the hard, horny, and protective coverings on the feet of certain animals, such as horses, deer, and cows. They are essential for support and traction while walking or running.
Who climbed mtkilimanjaro?
thousands of people a year climb it... its not a technical climb.. its the easiest of the seven summits and really not that hard..
When were ice axes first used in mountaineering?
Ice axes were first used in mountaineering in the early 1900s. It allowed hikers to easily climb mountains that had ice on them. Before it was very hard to do this.
