Here are just a few of the many different types of jellyfish: Box jellyfish This jellyfish looks like a square with its four sides -- hence the name "box." This subclass of 16 jellyfish species includes the sea wasp. Box jellyfish tend to gravitate toward the mouths of rivers and cre...
However, when you contemplate the very minor phyla that only have a few species in them, it's probably entirely probable that there have been some major dead ends there. To get to the point where they are a phyla in the first place would take a lot of time and evolution though. ...
Animal Species:We don't actually know how many species of animal there are on our planet, and it is quite likely that there are many that will go extinct before we ever learn of their presence. Some estimates place the number of species of animal the range of a fairly modest 1-2 ...
A surprise surfaces in a city park: jellyfish How tiny species got into lagoon mystifies expertsNancy Moffett
Many clever species are undeterred by porcupine quills, venomous snake fangs, sticky-armed octopuses, and more.
The jellyfish’s life cycle begins with eggs. Jellyfish reproduce sexually. Mature jellyfish are either male or female and have reproductive organs known as gonads. There are several different ways jellyfish species fertilize their eggs, but all include both male and female jellyfish. In some ...
In the last 60 years, box jellyfish have killed more than 5, 500 people. If a person is stung (刺痛) by a box jellyfish, he or she must get help immediately. Otherwise, that person's chance of survival () is almost zero.( A )1. How many kinds of animals are mentioned? A.6....
aHow many species these communities contain is still anyone's guess. 多少个种类这些社区包含仍然是任何人的猜测。[translate]
responsible for making the shell. Shells continue to grow as mollusks grow, so the length of time it takes to produce a shell can vary from species to species. Many mollusks go through a larval stage in their development, so the actual start of shell production can differ among species as...