Up until major human development in the last 300 years, the reef grew both laterally and vertically from almost nothing in the last 1 million years. Human development has caused a shrinking of the reef due to pollution.
Nothing happened. Formation immediately just became present day in an instant.
Nothing. Absolutely nothing has happened!
It is questionable due to the fact that there is no official timeline of Fraser Island.
present is today and past tense is it has already happened.
Oxygen is believed not to be present at the time of Earth's formation.
Heat is always present in the formation of metamorphic rocks.
shrink is something that has happened and shrinking is happening in present.
Present is now - what is currently happening - and past is anything and everything that has happened (been and gone).
If your question is 'Is the trophoblast present during germ layer formation (i.e. gastrulation) ?' then the answer is YES
The past participle is used for forming the perfect tenses and passive voice, often ending in -ed or -en, like "bought" or "taken." The present participle ends in -ing and is used to form the progressive tenses or as a gerund, like "buying" or "taking."
The mesentery is required for normal fetus births. The mesentery provides a barrier between the fetus and the uterus and also supplies nutrients.
They are also known as incremental lines of von Ebner. The are incrementallines in the dentin of hte tooht that reflect the variations in mineralization during dentin formation. The distance between the liens corresponds to the daily rate of dentin formation:-)