The answer is An endangered species is a type of organism that is threatened with extinction. Species are becoming endangered for two main reasons: habitat loss and loss of genetic variation.
- Habitat loss can occur naturally. The dinosaurs, for example, lost their habitat about 65 million years ago. The hot, dry Cretaceous climate changed very quickly, most likely due to an asteroid impact on Earth. The asteroid's impact threw debris high into the atmosphere and reduced the amount of heat and light reaching Earth's surface. The dinosaurs could not adapt to this new, cooler habitat. The dinosaurs were threatened with extinction and then died out.
- Human activities can also contribute to habitat loss. The development of settlements, industry and agriculture reduces the habitat of native organisms. This can be done in a number of ways.
- Development may directly remove native habitats and species. In the Amazon rainforest in South America, developers have cleared hundreds of thousands of hectares. Clearing a piece of land means removing all trees and vegetation. The Amazon rainforest is being cleared for ranching, logging and urban use. That means the habitat can support fewer cougars. However, since large parts of the Sierra Nevada, Rocky and Cascade mountain ranges remain undeveloped, cougars are not in danger.
To know more about endangered species, visit:
https://brainly.in/question/25108886
#QWER
If a farmer decides to stop using chemicals like fertilizers and pesticides on his crops, fungi will grow on the plants’ roots to help the plants get more nutrients.
Pesticide is a generic term that refers to all the chemical substances that are used to prevent attack on plants by other living organisms. Fertilizers are chemicals that are added to the soil to aid plant growth.
However, these pesticides have a harmful effect on fungi which helps to increase the uptake of water and nutrients by plants and also to increase availability of nutrients to the plant roots.
However, if the farmer stops using these pesticides, fungi will grow on the plants’ roots to help the plants get more nutrients.
Learn more: brainly.com/question/9484968
Primary, Secondary, Tertiary, Quaternary <span />
Answer: Adrenal cortex
Explanation:
The adrenal cortex which is the outer part of the gland produces some hormones which is life saving hormones or vital hormones.
Two of those hormones are aldosterone and cortisol. Cortisol helps in the metabolism and helps the body to respond to stress in a balanced way.
The aldolsterone helps in the maintaining the blood pressure of the body. It is a type of mineralocorticoid which is produced by the zona glomerulosa of the adrenal cortex.
About.1.9 million. Thats just an estimate.