Here are a couple of facts about boars based on the evidence found by the scientists :
- Boars have been domesticated by humans since 13,000 BC
- Boars are originated from Iberian Pigs
- Wild boar vocalizations are acoustically continuous
Answer: Eukaryotic organisms, such as algae, fungi, and higher plants, have multilayered cell walls composed in large part of either cellulose or chitin . ... Cellulose microfibrils form the scaffold of all plant cell walls. brainliest?
Explanation:
Answer:
Mass extinctions have occurred throughout the planet's history and in many of them primate species also have been extinct. Climate change was the cause of some of these extinctions. For instance, between the end of the Eocene and the beginning of the Oligocene global climate became drastically colder and drier, resulting in a decrease in the food supply and in the consequent extinction of several species of adapid and omohyoid primates from America, South Europe and Asia. Extinctions due to climate change can be triggered by both catastrophic global events and the planet's natural climate dynamics.
Non-climate related environmental events also occurred throughout the evolutionary process, affecting primate populations and species and eventually causing their extinction. Changes in geographic space can lead to interaction between different species and populations and consequently competition for resources, excessive predation or pathogen transmission (a phenomenon called “Background extinction”), and all these factors also contributed to the disappearance of some primate species. This type of extinction includes those most recently caused by human action.
<span>The 1-kg ball accelerates twice as much as the 2-kg ball.</span>
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.
