Q.7.ASSERTION: Each step in a food chain is called a trophic level. REASON: Trophic levels are formed by both plants and animals.

Answer:

One milliAmp is equivalent is one-thousandth of an Amp. For example, 0.1 Amps is equivalent to 100 milliAmps and 0.01 Amps is 10 milliAmps.

Explanation:

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Answer:

1 milliampere = 1000 Amperes

Answer:

Four household pests are : rats, mosquitoes, flies, cockroaches.

1. Ants :-Ants enters house in search of food .any nests are often are located on lawns,in warm ,dry soil and under paving looking for finely powered soil.Ant control services are available from Ehrlich treat ant problems
2. Rats :-Black rats among the most common in U.S.signs of infestationinclude droppings and teeth marks on electriccables,which can be a fire hazard. Rats are also known to Spread Diseases
3. Mosquitoes:-There are over 150 species of mosquito in the United States.They bite oflen and start to brcome a problem as temperature rise in spring and into summer.
4. Spiders:-The U.S. has 1000s of small and large spider species. They are attracted to warm ,dark spaces eg.wall cracks ,corner,air vents and in the eaves of your home.

Answer:

Niha: Hi Tania, how are you?

Tania: I am great, what about you?

Niha: I am fine. So what is your future plan? What do you want to do after passing the final exam this year?

Tania: Actually I have a dream to become a doctor from childhood and I am still on it.

Niha: Waoo that’s so good. What is your preparation?

Tania: As you know I am so good at biology and I hope I will do a good result in the final. And everything is depending on the result.

Niha: Why do you want to become a doctor?

Tania: Actually I am from a tiny village in Haryana, I spent my early childhood there and I have seen the village life from so close. People suffer a lot because of lacking good doctors. Still, there are lots of problems. I want to work for them.

Niha: That’s a noble reason I love your thinking.

Tania: Yeah, my parents are encouraging me to become a doctor and they are going to help as much as they can. What is your plan? What are you going to be?

Niha: I have a plan to study on Architecture. I think I am pretty good at design and drawings. I have a dream to work in the construction industry too.

Tania: That’s an amazing plan. What was the reason behind choosing this particular profession?

Niha: I am not sure, I just liked it. And I am reading lots of books related to the architect and the basics. I think I am going to enjoy professions. I love it by the way.

Tania: If you love something, then you just need to go for that.

Niha: Yes, I think the same.

Tania: That was a very nice conversation with you. I feel good to know your future plans.

Niha: I loved it too. Take care and see you.

Tania: Bye.

Explanation:

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Jane: Hello Juliet. It is nice to see you after such a long time. Where have you been?

Juliet: Hello Jane, It's nice to see you too. I've been busy in preparing for my engineering entrance examinations.

Jane: That is great! I did not know you wanted to become an engineer.

Juliet: I've always had a natural inclination towards a mechanical occupation, so I want to become an engineer. What are you going to do?

Jane: I have always loved teaching. Wish to become a good teacher like my mother. Do you remember how we used to imitate our teachers during our school days?

Juliet: No doubt, you have all the qualities of a good teacher. I have seen you guide your younger brother do his homework. You will be a very good teacher.

Jane: Thanks Juliet. I just hope I achieve my goal of becoming a competent teacher and share my knowledge with the students for their future.

Juliet: That is a very nice thought, Jane. There are many responsibilities that a teacher has to shoulder. It is a difficult job, although it's a very n

Answer:

B. 64 rolls

Total no. of cuts = 36*18

                            = 648 cuts

No. of cuts in a roll = 10

So, No. of rolls cut in 18 minutes = 648/10

                                                         = 64 rolls