Dalam membuat angket/kuesioner penelitian, apakah ada aturan tentang jumlah pernyataan positif dan pernyataan negatif? bila ada berapakah masing masing prosentasenya?

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

Show all steps i have my exam tomorrow

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.