1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
timofeeve [1]
4 years ago
11

Help !!! I’ll give you brainliest and points !!!!

Biology
1 answer:
Aleksandr-060686 [28]4 years ago
4 0

Answer:

The first question is answer A. The question asks for the independent variable, meaning this variable doesn't depend on any other variable. B is the dependent variable because the life span depends on the vitamin.

The second answer is A, the control group. It cannot be the other groups because they aren't real groups. Independent and dependent are variables, not groups.

You might be interested in
Which of the following is an example of a producer? Tree Hawk Rabbit Mushroom
adelina 88 [10]
Treeee

hawks and rabbits are consumers

mushrooms are decomposers
6 0
3 years ago
Read 2 more answers
In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions.
asambeis [7]
<span>In cells, enzymes are proteins that are needed to lower the amount of energy required to start chemical.</span>  

 Enzymes are biological catalysts which accelerate chemical reactions (reactions are millions of times faster than without them). Every enzyme has an active site which binds substrates and converts them into products. 
6 0
3 years ago
An airplane flies with a constant speed of 768 km/h. How long will it take to travel a distance of 2496 kilometers?
Aleonysh [2.5K]

Answer:

The correct answer is - 3 hours 15 minutes.

Explanation:

Given:

Speed = 768 km/h

distance = 2496

Solution:

Converting speed in km/minutes:

768/60 = 12.8

Now by the formula,

Time = distance/speed

time = 2496/12.8

=195 minutes

converting in hour  = 195/60

= 3 hour 15 minutes.

6 0
3 years ago
This causes substances to move across the cell membrane, against the concentration gradient.
salantis [7]
The correct answer is active transport. Active transport entails movement of substances against a concentration gradient and requires use of energy in form of ATP and use of protein pumps. Active transport is used to enhance several activities in the body such as movement of nutrients from the small intestines to the blood stream, this ensures that all the nutrients have moved from the lumen,
5 0
3 years ago
5) The troposphere of the Earth's atmosphere supports life because it contains
Alexeev081 [22]

Answer:

I think its A

Explanation:

Because the reason why airplane have closed windows is because we can't breathe in carbon dioxide when we go up. Of course there is oxygen just not a lot as we go up. Why would there be helium in the air? We would sound weird when we skydive.

8 0
3 years ago
Other questions:
  • Which is not a responsibility of a subcommittee answers?
    10·2 answers
  • A slight change in pH can harm the cell.
    7·2 answers
  • Pesticide use ________.
    15·1 answer
  • What is a heterotroph
    8·2 answers
  • What are 2 ways organisms of the Galapagos Islands are protected?
    5·1 answer
  • How the metabolism of hetero trophy differs from that of autotrophs
    14·1 answer
  • List two ways in which bacteria are important to humans. Briefly explain these ways.
    5·1 answer
  • Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
    11·2 answers
  • What features are present in both a plant cell and bacterial cell
    13·1 answer
  • based on the information in both texts , what is the differnce between the butterfly and frog life cycle ? PLEASE ANSWER !
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!