Birding, also called birdwatching, is a leisure activity that is growing in popularity. There are many ways to be a bird enthusiast. For example, you may simply notice the birds you see on evening walks, or you may actively seek out places to view interesting and rare birds. You might go birding on your own, or you can watch birds with a group of friends. It doesn't take much to get started birdwatching except a desire to see birds. Start by observing birds around you. Tools such as binoculars can help you bring birds into focus. Learning to look for and compare specific trait will help you identify different species. By visiting different habitats during different seasons, you can learn which species will come to specific areas at certain times. Source: US Fish and Wildlife Service Select the correct answer from the drop-down menu. What can the reader infer about the author of the passage? The reader can infer that the author believes that [Drop Down Menu] 1. birding experts participate in the activity without any extra equipment 2. the types of birds in one area remain the same throughout the year 3. doing some research can help a person identify different birds

3. doing some research can help a person identify different birds

Explanation:

Doing some research, such as learning about specific traits that specie of birds has, or visiting different habitats during different seasons can help you to obtain information about the characteristics of the different types of birds.  Also, by comparing what you observe with what you learned or with other birds that are present, can be very helpful to identify birds and become an expert.

answer: first person

explanation:

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: