I WILL GIVE YOU BRAINLIEST Part A

Which statement is a central idea of the text?

The scientific method is based on observations.

The scientific method is based on reading scientific journals.

Scientists generate guesses in the scientific method.

Variables are sometimes used in the scientific method.
Question 2
Part B

Which detail from the text best supports the answer in Part A?

Conditions change in different experiments.

Experiments produce evidence for scientific ideas.

Hypotheses are ideas about what might happen.

Scientists share their results in journals and papers.

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.

Most of the carbon on earth is stored in the form of

Why do mountaineers become breathless as they reach high altitudes