"simultaneously increases" is grammatically correct and can be used in written English.
It means that two or more things are increasing at the same time. Example: The demand for technology and the cost of production simultaneously increased, leading to higher prices for electronic devices.
This simultaneously increases the power of state governments and of the federal department of education.
If an intervention reduces a patient's frequency of hospitalization from ten admissions annually to five, but simultaneously increases that patient's survival from one year to two, the intervention is fully justified medically but is a wash from a cost perspective.
The other is that upgrading subspecies into species simultaneously increases the number of rare species (by fragmenting populations) and augments the biodiversity of a piece of habitat and thus its claim for protection.In the short term, this strategy helps conservationists by intensifying the perceived threat of extinction.
The magnetic field simultaneously increases the rate of hydrogen evolution and modifies the hydrogen bubble size.
The tetramethyl substitution group on the phenyl rings simultaneously increases polymer free volume and chain stiffness.
Firstly, it increases their share of the surplus and secondly, it simultaneously increases the joint venture's surplus itself.
Improved manufacturing technologies have simultaneously increased flash drives' capacity while decreasing their cost.
It will simultaneously increase profits, decrease consumer prices, prevent excessive wage rises and support increases in wages.
Once a crisis looms, currency devaluations to improve export prospects simultaneously increase the value of foreign currency denominated debt".
The pill is supposed to suppress appetite and simultaneously increase metabolism.
Since Waterford Wedgwood's only chance to bolster sales figures lies in the coming holiday season, the company simultaneously increased its marketing budget 15percentt.
