The phrase "activity has contributed a" is correct and usable in written English.
It can be used when discussing the positive impact or role of a specific activity in achieving a result or outcome.
Example: "The community service activity has contributed a significant amount of resources to local charities."
Alternatives: "activity has played a role in" or "activity has added to".
This increased activity has contributed to a growing market for innovation and crowdsourcing capabilities, resulting in a recent $20 million worth of open innovation service contracts with NASA.
Of late the realisation that the metabolites so generated possess inherent biological activity has contributed to increased interest in a previously understudied area.
1 Some studies have suggested that a decline in physical activity has contributed to this trend, 2 while others have suggested that there has been no obvious trend of declining physical activity in recent decades.
On an evolutionary time scale, RTE activity has contributed hugely to the evolution of mammalian genomes [ 61- 64], and when attempting to understand the diversity of present eukaryotic life it is essential to include the history and activity of RTEs.
Fratella is a science teacher who believes that human activity has contributed to climate change, but says he will "leave [it] to the experts" to determine how much.
The authors have reached some pretty depressing conclusions: that human activity has contributed to climate change, and that even if we change our behaviour today, the planet will become a more dangerous place.
Opinion polls show that Australians overwhelmingly support both abortion rights and legalizing same-sex marriage and accept the majority scientific opinion that human activity has contributed to climate change.
The Ministry of Defence said in its FOI response: "Since December 2015 UK military air activity has contributed to the Coalition's aim of disrupting and degrading Daesh military infrastructure, logistics and revenue streams inside Syria.
