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
anzhelika [568]
3 years ago
9

How can humans have a positive impact on air quality?

Biology
2 answers:
mario62 [17]3 years ago
6 0

Answer:

A - by using public transportation instead of driving a car

Explanation- I just took the test.

Svetradugi [14.3K]3 years ago
3 0

Answer:A

Explanation:

did it on edgenueity 2020

You might be interested in
Which is an example of Earth’s conditions slowly changing? a. meteors striking c. continents moving b. volcanoes erupting d. a m
erik [133]
C. continents moving
7 0
3 years ago
Read 2 more answers
Which of these is not a feature of the prokaryotic cells?
Troyanec [42]

Answer:

D

Explanation:

Prokaryotic are simple cells and do not have nucleus.

7 0
2 years ago
Read 2 more answers
tropical rain forest tend to have soils that are nutrient poor, and most of the nutrient are found in the top few inches of the
Sliva [168]

Answer:

They either get their source of nutrients from something else. Or, they could also have shorter roots so that they only reach the top of the soil. They probably won't need as much nutrients to survive either.

Explanation:

5 0
3 years ago
Read 2 more answers
The Brazil nut tree, Bertholletia excels (n = 17), is native to tropical rain forests of South America. It is a hardwood tree th
Anna71 [15]

Answer:

Answer is option A.

Orchid bees are to Brazil nut trees as breezes are to pine trees.

Explanation:

In Brazil nut trees, the female orchid bees act as pollinators that help in pollination. In pine trees, wind or breeze helps in pollination.

Pine trees are gymnosperms and so they do not have flowers to attract pollinators like bees or butterflies or birds. They are wind-pollinated. Pine trees are monoecious i.e., both male and female reproductive structures (pine cones) are present on the same tree.

The male cones (catkins) produce pollen grains that are lightweight, less sticky and have air bladders or small wing-like structures. As a result of these features, the pollen grains can be easily carried and dispersed by the breeze. In order to prevent self pollination (pollen falling on the female cones of the same tree), the male cones are normally located on the lower branches of the pine tree.  

The female cones are located on the upper branches of the tree and the center of the cone contains eggs or ovules. The pollen grains that are carried by the wind, fall on the female cone of another pine tree. Each pollen grain grows a pollen tube into the center of the cone and the nucleus cell of the pollen travels through the tube and reaches the egg, where it combines with the egg to form an embryo. The embryo eventually grows into a seed. The seeds of pine trees are then dispersed by wind or animals such as squirrels.

6 0
3 years ago
. Which summarizes the genetic research completed by the Austrian monk Gregor Mendel?
Bond [772]

Answer:

C. Mendel hypothesized that the traits of pea plant offspring are inherited.

Explanation:

A. After years of research, Mendel identified the genes for flower colors.  False. During Mendel's research, genes were not yet discovered.

B. Mendel bred various dog breeds to discover the science of genetics.  False. Mendel worked with pea plants, not dogs.

C. Mendel hypothesized that the traits of pea plant offspring are inherited.  True. Mendel uncovered the main principles of the inheritance of simple traits.

D. Using Punnett squares, Mendel developed the principles of genetics. False. The Punnett square was invented by Reginald C. Punnett,

6 0
3 years ago
Other questions:
  • Sensory cells in the human eye can detect changes in light. The information obtained from these sensory cells is transmitted to
    7·1 answer
  • The sequence of depositional units at a site is referred to as the siteʹs __________.
    13·1 answer
  • The lower rear portion of the pelvic bone on which one sits is called the ________.
    14·1 answer
  • Biomes are large regions characterized by certain conditions, including a range of climate and ecological communities adapted to
    11·1 answer
  • What element is the most abundant in photosynthesis
    12·1 answer
  • Mutations that hinder the survival of an organism
    14·1 answer
  • To study the diversity of life, biologists use a classification system to name organisms & group them in a logical manner. I
    5·1 answer
  • Boilogy ;factors that affect enzymetic activites​
    8·1 answer
  • If everyone on the planet used the same amount of resources as an average American, what percent of the Earth would
    6·1 answer
  • Please answer asap!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!