Gas is the correct answer
"The Sperm's Long Journey. A man may ejaculate 40 million to 150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to 48-72 hours."
Answer:
Due to more open ecological opportunities on a given island, greater differences occur between island species. A single lineage diversifies rapidly, and descendant populations occupy many habitats and ecological roles.
Explanation:
Answer:
The correct answer is - 4.1 billion years ago.
Explanation:
In the question, there is a timeline given based on the fossils evidence and on the base of this timeline, it is given that the earth formed around 4.5 Billion years ago. Soon after the earliest water, the first living unicellular single-celled organism found which is dated around 4.1 billion years ago.
It has appeared soon after the earth formed itself and after a billion years later the first photosynthetic organism occurred.
Hi , well the average weight of terrestrial mammals+birds+reptiles+dinosaurs is 1,269p , marine mammals + terrestrial mammals 1,037p, only terrestrial mammals 106 pounds.
