Answer: C. 30 - 50 million years ago
Explanation:
Fossils found in layer Y formed 30 million years ago according to the graph above. Similarly, fossils found in layer Z formed 50 million years ago.
If a fossil (fern fossil) is found between layer Y and layer Z, it means that it formed between the years that the fossils in layers Y and Z formed which is 30 - 50 million years ago.
Temperate deciduous forests<span> or temperate broad-leaf</span>forests<span> are dominated by trees that lose their leaves each year. They are found in areas with warm, moist summers and mild winters. so </span>Precipitation in deciduous forests is best described as "<span>occurring throughout the years"</span>
Mitosis
because the cell split into two identical copies!
Answer:
The correct answer is- Immune system
Explanation:
There are physical, chemical and immunological barriers present in our body which helps us to protect from the foreign antigen. They all assist each other and helps in pathogen removal from our body.
The physical barrier includes skin, gastrointestinal tract, respiratory tract, etc which do not allow the microbe to enter the body. Chemical barriers include tear, saliva, acid in the stomach which kills microbes on the body surface.
Immune cells like macrophages, B cells kills microbes when it gets in the body. Lymphatic system also contain immune cells and helps in microbe removal.
So the immune system is assisted by physical barrier, chemical barrier, and lymphatic system.
Answer:
Disease affects an organism by disrupting the organism's homeostasis. Homeostasis is the process by which an organism maintains a steady internal environment (stable body temperature, blood sugar level, electrolyte balance, etc.). A disease will disrupt this process. For example, Helicobacter pylori (the bacteria responsible for most stomach ulcers in humans) disrupts homeostasis by interfering with the production of the mucus layer that protects the stomach lining cells from the hydrochloric acid in the stomach lumen.
Explanation: I hope this helps you!!!! GOOD LUCK
