Deprecated: Return type of Wikimedia\Rdbms\IResultWrapper::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/libs/rdbms/database/resultwrapper/IResultWrapper.php on line 70

Deprecated: Return type of Wikimedia\Rdbms\IResultWrapper::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/libs/rdbms/database/resultwrapper/IResultWrapper.php on line 80

Deprecated: Return type of Wikimedia\Rdbms\IResultWrapper::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/libs/rdbms/database/resultwrapper/IResultWrapper.php on line 75

Deprecated: Return type of Wikimedia\Rdbms\ResultWrapper::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/libs/rdbms/database/resultwrapper/ResultWrapper.php on line 117

Deprecated: Return type of Wikimedia\Rdbms\ResultWrapper::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/libs/rdbms/database/resultwrapper/ResultWrapper.php on line 90

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::open($save_path, $session_name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/PHPSessionHandler.php on line 205

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/PHPSessionHandler.php on line 220

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::read($id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/PHPSessionHandler.php on line 234

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::write($id, $dataStr) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/PHPSessionHandler.php on line 262

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::destroy($id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/PHPSessionHandler.php on line 368

Deprecated: Return type of MediaWiki\Session\PHPSessionHandler::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/PHPSessionHandler.php on line 389

Deprecated: Return type of MediaWiki\Session\Session::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 625

Deprecated: Return type of MediaWiki\Session\Session::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 631

Deprecated: Return type of MediaWiki\Session\Session::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 643

Deprecated: Return type of MediaWiki\Session\Session::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 637

Deprecated: Return type of MediaWiki\Session\Session::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 655

Deprecated: Return type of MediaWiki\Session\Session::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 649

Deprecated: Return type of MediaWiki\Session\Session::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 665

Deprecated: Return type of & MediaWiki\Session\Session::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 678

Deprecated: Return type of MediaWiki\Session\Session::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 688

Deprecated: Return type of MediaWiki\Session\Session::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/includes/session/Session.php on line 693

Deprecated: Message implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /home/www/science-at-home.de/wikimag/includes/Message.php on line 159

Deprecated: RawMessage implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /home/www/science-at-home.de/wikimag/includes/RawMessage.php on line 34

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Deprecated: Return type of RemexHtml\Tokenizer\PlainAttributes::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/PlainAttributes.php on line 24

Deprecated: Return type of RemexHtml\Tokenizer\PlainAttributes::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/PlainAttributes.php on line 28

Deprecated: Return type of RemexHtml\Tokenizer\PlainAttributes::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/PlainAttributes.php on line 32

Deprecated: Return type of RemexHtml\Tokenizer\PlainAttributes::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/PlainAttributes.php on line 36

Deprecated: Return type of RemexHtml\Tokenizer\PlainAttributes::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/PlainAttributes.php on line 40

Deprecated: Return type of RemexHtml\Tokenizer\LazyAttributes::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 30

Deprecated: Return type of & RemexHtml\Tokenizer\LazyAttributes::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 37

Deprecated: Return type of RemexHtml\Tokenizer\LazyAttributes::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 44

Deprecated: Return type of RemexHtml\Tokenizer\LazyAttributes::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 51

Deprecated: Return type of RemexHtml\Tokenizer\LazyAttributes::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 83

Deprecated: Creation of dynamic property RemexHtml\Tokenizer\LazyAttributes::$interpreter is deprecated in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 18

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Deprecated: Creation of dynamic property RemexHtml\Tokenizer\LazyAttributes::$interpreter is deprecated in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 18

Deprecated: Creation of dynamic property RemexHtml\Tokenizer\LazyAttributes::$interpreter is deprecated in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 18

Deprecated: Creation of dynamic property RemexHtml\Tokenizer\LazyAttributes::$interpreter is deprecated in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 18

Deprecated: Creation of dynamic property RemexHtml\Tokenizer\LazyAttributes::$interpreter is deprecated in /home/www/science-at-home.de/wikimag/vendor/wikimedia/remex-html/RemexHtml/Tokenizer/LazyAttributes.php on line 18

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Warning: Trying to access array offset on value of type null in /home/www/science-at-home.de/wikimag/includes/profiler/SectionProfiler.php on line 99

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 *'''[[Mathematik sorgt für sauberes Wasser]]''' ([[Biologie]])

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