According to the Federal Noxious Weed Act of 1974, what can a noxious weed injure?

The Federal Noxious Weed Act of 1974 classifies noxious weeds as invasive plant species that can cause significant harm. These weeds can adversely affect crops by competing for nutrients, water, and sunlight, ultimately hindering agricultural productivity. Additionally, noxious weeds can threaten livestock by providing unpalatable or toxic food sources and can harm their grazing areas.

Public health is also impacted by these invasive species, as certain noxious weeds can lead to allergies, skin irritations, or toxic effects when humans come into contact with them. The Act's intention is to manage and mitigate the detrimental effects of these plants across various sectors, highlighting the comprehensive damage they can inflict on agriculture, animal welfare, and human health. Therefore, the choice indicating that noxious weeds can injure crops, livestock, and public health encapsulates the wide-ranging threats posed by these species, making it the correct answer.