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
bija089 [108]
3 years ago
7

Help: explain how sunlight is the primary source of energy for the life of a bear...

Biology
1 answer:
photoshop1234 [79]3 years ago
4 0
Bears eat plants such as berries, and plants get their energy from the sun. So his energy source's energy source is sunlight, which also makes it his energy source
You might be interested in
A 7th grade teacher asked students to engage in an argument regarding human impact on a national forest ecosystem that was home
a_sh-v [17]

Answer:Student 4

Explanation: Because if the mountain lions, coyotes, and bobcats decrease they arent enough to prey on the deer which causes the deer population to be able to reproduce over time.

6 0
2 years ago
Why is there no rock record of the Hadean period?
damaskus [11]

Earth’a temperature was too high for solid rock to form.

7 0
3 years ago
Read 2 more answers
Nocturnal animals are important pollinators. What niche do they specifically fill?.
natita [175]

Answer:

Nocturnal animals are important pollinators. What niche do they specifically fill? They eat the nectars of angiosperm flowers.

Explanation:

3 0
3 years ago
Species richness increases Select one: a. as we increase in altitude in equatorial mountains. b. as community size decreases. c.
olga55 [171]

Answer:

D) as we travel southward from the North Pole.

Explanation:

Species richness is the number of different species in a particular community. If we found 30 species in one community, and 300 species in another, the second community would have much higher species richness than the first.

Communities with the highest species richness tend to be found in areas near the equator, which have lots of solar energy (supporting high primary productivity), warm temperatures, large amounts of rainfall, and little seasonal change. Communities with the lowest species richness lie near the poles, which get less solar energy and are colder, drier, and less amenable to life. This pattern is illustrated below for mammalian species richness (species richness calculated only for mammal species, not for all species). Many other factors in addition to latitude can also affect a community's species-richness.

7 0
3 years ago
Read 2 more answers
Two insecticides will be compared for their effectiveness in eliminating aphids on tomato plants. Forty tomato plants of the Big
densk [106]

Answer:

The t-test

Explanation:

<em>The researcher should use a t-test to compare the two means and check if they are significantly different from each other.</em>

In using the t-test, both null (H0) and alternate (H1) hypothesis are made such that:

  • H0: n1 = n2
  • H1: n1≠ n2

Thereafter, the value of t is calculated and compared to its critical value on the table. The formula for calculating the t goes thus:

t = \frac{Y_1 - Y_2}{\sqrt{\frac{S_1}{n_1} + \frac{S_2}{n_2}  } }

where, Y1 = mean of population 1, Y2 = mean of population 2, S1 = variance of population 1, S2 = variance of population 2, n1 = number of individuals in population 1 and s2 = number of individuals in population 2.

<em>At the end of the day, if the calculated t value is more than the critical value of t, the H0 is rejected and it shows that the two means are significantly different. Otherwise, the H0 is accepted and this shows that there is not significant difference between the mean of population 1 and that of 2.</em>

7 0
3 years ago
Other questions:
  • Suppose a researcher wants to know whether a high protein diet causes children to learn better in school. half of the children i
    7·1 answer
  • How do energetic considerations affect the structure of populations? communities? ecosystems?
    13·1 answer
  • How did the discovery of ribozymes assist in creating a plausible model for the prebiotic origin of life?
    14·1 answer
  • Where do electromagnetic waves move most quickly HELP ANSWER QUICKLY 80POINTS
    10·2 answers
  • In a classic experiment using pea shape, Mendel conducted two separate genetic crosses. In the first cross the parent plants wer
    13·1 answer
  • What might happen if the gametes of a species had the same number of chromosomes as the species' body cells?
    5·1 answer
  • 17. How does active transport differ from all other forms of transportation?
    11·2 answers
  • Which of these methods that aids in the movement of ions or molecules across a cell membrane requires the use of energy which is
    13·1 answer
  • Some plants require water, light, minerals, oxygen, and carbon dioxide to survive. These are examples of __________ that plants
    8·1 answer
  • Which of the following best describes
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!