Although the actual questions are missing from your ask, here's how you can tell.
If the study will be messed up (added bias) through interaction with the subjects the study should be observational. For example if a biologists wanted to study the eating habits of wild birds in the tropics, they would need to do an observational study. if they did a controlled experiment, the birds will change their eating habits based on human interaction, thus making the study invalid.
If the study requires specific measurements, close monitoring, or contact and interaction with the subjects the study should be a controlled experiment. For example, if a scientist wanted to test out a new drug, the health of patients would need to be closely monitored.
Answer: autotrophs are producers whereas hetetrophs are consumers.
Explanation: autotrophs produce their own food from raw materials and energy like plants wheareas autotrophs
Consume producers or other consumers like dogs
1.3.1 A form of security required by the bank before granting a loan is called collateral.
1.3.2 A financial statement that summarises the assets and liabilities of the business is called a balance sheet.
1.3.3 A document that provides an estimate of expected income and expenditure for a given period is an income statement.
1.3.4 The combination of product, pricing, placement, and promotion is called the marketing mix.
1.3.5 The sequence of steps involved in transferring products from the farm to the consumer Direct marketing.
An asset that a lender accepts as collateral for a loan is referred to as collateral. Depending on the loan's purpose, collateral may be in the form of real estate or other forms of assets. For the lender, the collateral serves as a type of insurance.
The act of presenting an offer directly to a target client and providing them with a way to respond immediately is known as direct marketing. It is sometimes referred to as direct response marketing among practitioners. Advertising, in contrast, is a form of mass messaging.
To know more about collateral refer to: brainly.com/question/6779619
#SPJ9
Answer:
Bacteria
Explanation:
Because it is a living thing that can affect other organisms
By breaking down food particles gradually
