Which statement describes how humans can decrease an ecosystem's ability to support life? A. People cut down the trees in a forest, leaving less habitat for squirrels.
B. People build and put up bird houses, giving bluebirds needed nesting space.
O C. People allow small fires to burn in a grassland, returning nutrients to the soil.
D. People remove non-native species from a lake, allowing other plants to grow.

A. People cut down the trees in a forest, leaving less habitat for squirrels.

Explanation:

A large percentage of the depletion of an ecosystem can be attributed to anthropogenic or human activities. Ecosystems are naturally known to support or inhabit life. For example, many trees in an ecosystem are homes to living organisms such as birds, insects, snakes etc.

However, according to this question, an exemplary description of how humans can decrease an ecosystem's ability to support life is when "people cut down the trees in a forest, leaving less habitat for squirrels". This act will decrease the forest's ability to support life.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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picture a world where computers are building made-to-order personalized robotic arms and synthetic organs, drones are circulating above mars! due to the rapid growth of technology, the future has never been more unpredictable, and it presents a huge challenge in education: we are teaching students how to work in a future that we have never been unsure of. it is widely predicted that in eight years’ time, there will be more jobs in the fields of science, mathematics, technology and engineering than in any other discipline. and, as the technology continues to develop, it will soon become clear that addressing social problems will involve more innovative thinking, and analytical and technical knowledge than ever before. undeniably, there are no subjects that encourage innovative and creative thinking, deep thought, problem solving and independence more than the stem subjects. while it is widely commented on that there is a need to reimagine the ways stem subjects are taught in schools by embracing a more interactive and innovative approach to appeal to more students, it should come as no surprise that some of the most reputable educational organizations in the world are already implementing changes to embrace stem. harvard, for example, announced in 2014 that they were increasing their computer science faculty by over 50% and has since introduced computer science as a core subject for all freshmen. the urgency of supporting stem subjects at a young age is becoming more relevant than ever, as adopting a keen interest in the curricula needs to happen early. however, beyond the age issue is one of gender.

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