Sentences with phrase «over millions of years»

The theory goes something like this: We evolved over millions of years without consuming the foods available after the advent of agriculture.
This is the body's natural response to stress, developed over millions of years of human evolution.
Having developed over millions of years to provide the best possible nutrition for baby, breastmilk is easily digested by baby.
The holes on the rock were formed over millions of years by this very action.
Therefore, they provide a window into studying past viral infections that happened over millions of years in different species.
This contradicts the big bang explanation that stars and planets formed over millions of years from large rotating clouds of dust and gas.
They were not created over millions of years so that we could have a great set of photos to take home.
This process took place over millions of years, as language and culture evolved.
Perhaps no surplus carbon sink exists at all to absorb the emissions caused by burning of fossil fuels accumulated in the earth over millions of years.
The vast majority of these genes show a complexity that could have been achieved only over millions of years.
The data he had gathered whilst addressing this question had also started him thinking about the ability life might regulate the atmosphere over millions of years.
This wonderful landscape was created over millions of years ago through natural forces!
What starts off as a tiny crack steadily grows larger from repeat flash floods and erosion over millions of years.
These tiny shells fall to the bottom of lakes and oceans over millions of years, accumulating in massive white deposits that are then mined and crushed to a fine powder.
However, evolutionary theory does not consider such short time scales, but rather developmental changes occurring over millions of years.
They determined how long these control points have existed, when they were acquired and how quickly they have changed across species over millions of years.
Growing crops for fuel — known as biofuels — represents another potential way of cutting GHGs by replacing fossil fuels (biofuels created underground by nature over millions of years).
They've figured out how a dwarf virus bursts out of bacterial cells and hope to borrow the strategy, which has been perfected by the virus over millions of years.
The dominance of negative feedbacks over the millions of years that comprise the climate time series is surely the main reason that we all exist today?
My body has passed through all the stages of evolution through which matter has passed over millions of years.
Our bodies have evolved to eat whole foods over millions of years while manufactured and processed foods have only been around for a couple hundred years.
It occurs naturally over a wide range of thermal environments, and has experienced such variety over millions of years.
The pair found distinct changes in corals on the margins of the Caribbean reefs over millions of years, while samples taken from central locations were static.
For example, a more refined sea - level record over millions of years is commercially interesting because it allows a better understanding of coastal sediment sequences that are relevant to the petroleum industry.
High levels of oxygen likely accumulated in the lake over millions of years as glacial ice melted, injecting trapped gases from air bubbles into its waters.
«It's almost crazy to think that they're going to, in just a few decades, be more different than they've become over millions of years,» he says.
The common scientific belief has been that army ants originated separately on several continents over millions of years.
The leftover minerals have built up in concentration over millions of years.
The fundamental hypothesis of evolutionary ecology is that processes taking place over a single growing season are ultimately responsible for patterns of biodiversity that emerge over millions of years.
Indeed, we've evolved over millions of years without ever aiming for a «source» of this or any other nutrient.
What threw the creation out of balance so many times over millions of years before the advent of man?
The great white shark has remained unchanged over millions of years of evolution.
For us to have evolved on this planet over millions of years — of which there is zero physical evidence....
New species evolved over millions of years, but those time scales are almost beyond human comprehension.
The answer, of course, lies in nature's delicate adjustments, worked out over millions of years of massive trial and error, of survival experiments and adaptation and compromise.
Studies show that this process takes place over millions of years.
This chemical plant / engine has been created over millions of years to operate efficiently with a defined and perfected set of chemicals.
The discovery won't mean much for climate change: The process occurs over millions of years, and the amounts involved are small compared with human - driven emissions.
Jacquelyn Gill researches paleoecology and plant ecology — in other words, she studies the history of the global climate over millions of years — at the University of Maine.
«But fundamentally, life has evolved over millions of years with half the time dark and half the time light, and we have now enveloped our planet in a luminous fog of light.
a b c d e f g h i j k l m n o p q r s t u v w x y z