The answer to 21 is C. Sex Cells. Men produce sperm, which is a type of sex cell (or "gamete") and women produce eggs, which are also a type of sex cell (or "gamete").
Answer:
Explanation:
Trachea, which split into two bronchial tubes
Answer: The correct answer is Parrot and Dog.
The animals which can maintain their body temperature by generating internal heat are called as warm-blooded animals or endotherms. They maintain constant temperature irrespective of the temperature in their surrounding.
These animals mainly include birds and mammals.
On the contrary, the cold-blooded animals ( ectotherms) are those, which absorb heat from surrounding and do not generate much of the internal heat. Their temperature fluctuates as the surrounding temperature changes. These animals include reptiles, amphibians, fishes, and invertebrates.
Thus, the correct answer is parrot ( bird) and Dog( mammal)
Answer:
Explanation:
so
2 breads + 2 cheeses ⇒ 1 sandwich
if we use two slices of bread each time how many sandwich can we make with 33 slices
33/2 =16.5 sandwiches
if we use two pieces of cheese in each sandwiches how many sandwiches can we make with 15 slices ?
15/2 =7.5 sandwiches
the cheese her will run out first and we would have excess bread
so we would only be able to make 7.5 sandwiches without running out of ant ingredient :)
I think you forgot to give the options along with the question. I am answering the question based on my knowledge. Appalachian mountain range is well known for providing coal, copper and iron. Any of these choices can be your answer. Coal is actually the most abundant. I hope that the answer helps you.