Read the statement carefully then answer the question that follows. "Organisms are a part of their environment which is rich in living and non- living
elements that interact with each other in many ways"

1. What would happen to plants and animals if the sun stops shining?

2. What would happen to plants and animals if the sun shines continuously and is
hot every day? State the importance of the sun.

3. What would happen if the rain falls continuously for a very long time?

4. What would happen if the rain doesn't fall for a very long time?
State the importance of water/ rain.
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The diagram below represents a marine food web and a process that can harm the human population. each circle represents an organism and the smaller dots inside them represent a toxic substance. what is being represented and how does it harm the population? the diagram represents biological half-life, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents biomagnification, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents the process by which different organisms prey upon each other; this can impact the human population by reducing the number of organisms that do not contain the toxin. the diagram represents the way that toxins are metabolized by living organisms, with those at greater trophic levels able to metabolize more efficiently than those at lower levels. this means that those at higher tropic levels are safer for humans to consume compared to the organisms at lower trophic levels.

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?