Why is the apparatus left for 15 minutes at each new light intensity before starting measurements

Answers

Answer 1

Answer:

The apparatus is the instrument to perform various experiments in the lab. The apparatus is usually made up of glass.

These are the following apparatus used in the lab:-

Test tubes
Beaker
Funnel
Cone
Stove

Apparatus left for 15 minutes at each new light intensity before starting measurements to sterilize and make it pure and get the error-free readings.

Different light intensities are sensitive to the various bacteria and help to kill them.

For more information, refer to the link:-

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fossils are commonly found in which type of rock? A.paleolithic B. sedimentary C. igneous D. metamorphic

Answers

B.sedimentary

fossils are commonly found in sedimentary rocks

Fossils are commonly found in B. Sedimentary

Mr. Jones, the science teacher, tells his students that energy cannot be created; it must be captured from the environment. He is talking about the what. A: food chain
B: second law of thermodynamics
C: first law of thermodynamics
D: food web

Answers

A: food chain

In many functions of a living organism, it cannot make its own energy. It uses energy from its environment, retrieves and converts into a usable and edible matter. Organisms that can do this process is the autotrophs, they can facilitate photosynthesis which they gather energy from the sun, water and carbon dioxide in order to create energy by then, the transfer of this energy to other organism is played by the food chain –food web.

The question here is one after a lesson discussing the laws of thermodynamics. Within this lesson, you may find the fallowing passage: "According to the first law, an organism can absorb energy from its environment, or it can give up some of its energy to its surroundings. However, the total energy of the organism and its surroundings is always the same. The organism can't create the energy it needs to live. Instead, it must capture it from the environment. Once it captures energy, the organism can use the energy for its own biological work."

Answer: First Law of Thermodynamics

This picture shows the skeleton on an animal. What best describes what the living animal had?A backbone
Radial symmetry
Bilateral symmetry
Asymmetry

Answers

The correct option is, B, that is, RADIAL SYMMETRY.
Symmetry refers to the balanced distribution of the duplicated body parts or shapes within the body of a living organism. There are different types of symmetry, we have bilateral, radial and asymmetrical symmetry.
Radial symmetry refers to the type of body plan in which the body parts are arranged around a central axis, that is, the body parts are arranged in a circle around an axis.

Answer:B

Explanation:

The Answer is radial symmetry

Explain why fossil fuels can be said to contain store solar energy

Answers

I think it has to do with its age and being around for millions of years.

Difference between scavenger and carnivore?

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Yeah, most people get confused on this question.

Scavenger - They eat dead animals. EX: Hawk
Carnivore- Kills and eats animals. EX: Lion
Decomposer- De-composes dead material and gives it to soil for nutrients. EX: Fungi

Homologous chromosomes pair up together and crossing over occurs occurs where ?

Answers

Answer:

El entrecruzamiento cromosómico es un proceso biológico que ocurre durante la meiosis, cuando las parejas de cromosomas homólogos, o del mismo tipo, están alineadas. Durante la meiosis los cromosomas emparejados están alineados en las llamadas placas meióticas, y tienen un mecanismo biológico que los mantiene unidos.

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