Answer:
Ecological and ethological approaches to the study of behaviour. The natural history approach of Darwin and his predecessors gradually evolved into the twin sciences of animal ecology, the study of the interactions between an animal and its environment, and ethology, the biological study of animal behaviour.
Answer:
The correct answer is option - C. They replaced carbon dioxide with oxygen in the atmosphere.
Explanation:
Cyanobacteria or Blue-green algae is a group of bacteria that is making its own food using water and carbon dioxide in the presence of sunlight, the process of photosynthesis
These organisms release oxygen as a byproduct of photosynthesis in the atmosphere. Through this process, these organisms replaced carbon dioxide with oxygen in the atmosphere in the early earth.
Thus, the correct answer is option C. They replaced carbon dioxide with oxygen in the atmosphere.
The correct option is C.
Obligate anaerobes are micro organisms that are poisoned and killed when exposed to the normal atmospheric oxygen concentration. These organisms can only survive in the absences of oxygen, therefore, they carry out only anaerobic form of respiration in order to obtain the energy that they need. <span />
Your answer would be the third option
<span>Platanthera praeclara -
Las principales amenazas a esta planta son el desarrollo, el pastoreo excesivo, los incendios y el calentamiento global.
Symphyotrichum georgianum -
en peligro debido al desarrollo del hábitat natural.
Zizania texana -
amenazada por la disminución de los niveles de agua causada por la presa de Spring Lake.
Thelypodium howellii ssp. Spectabilis -
pero su población disminuye anualmente debido a la siega de pasto innecesaria en las áreas que esta planta llama hogar.
Stenogyne Kanehoanait-
se descubrió que los recortes de esta planta se pueden cultivar exitosamente en cautividad.
No soy tan fluido en español.</span>
