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Why do fish lay thousands of eggs at one time?

Why do fish lay thousands of eggs at one time?

fish lays thousands of eggs because some of them are eaten by big animals and some of them don’t get enough Oxygen and some more things that they can’t grow , So fish has to lay many Eggs so that so of them becomes a new one.

How many eggs does the female lay?

How many eggs are female humans born with? As a fetus early in development, a female has around a whopping 6 million eggs. The number of these eggs (oocytes, to be precise) is steadily reduced so that when a baby girl is born, she has between 1 and 2 million eggs.

Why is there an advantage to giving birth to single offspring?

With multiple young, predators could eat several and others could still survive to reach maturity, but with only one offspring, its loss could mean a wasted breeding season. The other significant advantage is the chance for the healthiest young animals to be favored from a group.

Why do humans not lay eggs?

Scientists have unraveled the origins of human pregnancy by tracing how our early mammal ancestors first evolved to give birth to live young. They found rogue fragments of DNA that jumped around the genome millions of years ago caused switched off the processes needed to lay eggs.

Why frogs lay so many eggs?

Frogs laid so many eggs in water to make sure that enough eggs reach to the morality & adulthood . because they are lowers in food chain & also have so may enemies in water & on land also . So to ensure for new generation they laid high number of eggs .

Why do humans not give birth to as many babies as frogs do?

frogs reproduces more because there is one father but the number of mothers are more because there could be any number of females that can be fertilized whereas in humans internal fertilization takes place so the sperm can only fertilize one egg.

How many eggs does a woman lose during her period?

How many eggs does a woman lose each month? After a woman starts her menstrual cycle, one egg is ovulated and about 1,000 (immature) eggs are lost each month.

Why are eggs not good for females?

In today’s health-hype world we live in, we now know the importance of our gut bacteria for our health. Egg yolks contain a compound called lecithin. Your gut bacteria convert this compound into a chemical TMAO and high level of TMAO is linked to an increased risk for heart attack or stroke[9].

What mammal has the biggest litter?

Probably the Tailless Tenrec (Tenrec ecaudatus) of Madagascar, although it depends how you measure it. Mammals can have very variable litter sizes, but as a rule, the maximum litter size is the number of nipples, and the average litter size about half that.

Do snakes lay eggs or have babies?

Answer: No! While snakes are known for laying eggs, not all of them do so! Some do not externally lay eggs, but instead produce young by eggs that are hatched internally (or inside) the body of the parent. Animals that are able to give this version of live birth are known as ovoviviparous.

What animals dont lay eggs?

Birds, insects, reptiles and fishes are oviparous animals. Animals which reproduce by giving birth to their young ones are called viviparous animals. These animals do not lay eggs. Mammals like cat, dog and man are viviparous animals.

Are humans hatched?

None of us hatched. All of us were born live, and we might seem to think of this as the default for mammals. Some mammals still lay eggs, just as our ancestors did for millions upon millions of years.