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trapecia [35]
3 years ago
13

13. Which of these statements about particulate matter less than 2.5 microns in diameter is true?

Biology
2 answers:
jekas [21]3 years ago
7 0

Answer:

Nitrogen Gas

Explanation:

penn foster

lesson 2

page 13

stellarik [79]3 years ago
5 0
B they are produced from nitrogen gas (N).
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Ovulation is stimulated by​
viktelen [127]

luteinizing hormone

Ovulation. Estrogen levels peak towards the end of the follicular phase. This causes a surge in levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). This lasts from 24 to 36 hours, and results in the rupture of the ovarian follicles, causing the oocyte to be released from the ovary.

hope this helps :)

7 0
3 years ago
Read 2 more answers
Name three different cells in a leaf that contain chloroplast. Please help​
xenn [34]

The leaf as a photosynthetic organ includes the following cells which contains chloroplasts

--> the palisade mesophyll

--> the spongy mesophyll and

--> the stomatal guard cells

Although all the green parts of a plant can be involved in the photosynthetic activities (with the exception of the root hairs), the leafs are the main organ of photosynthesis. Photosynthesis is the process by which green plants manufacture their food in the presence of sunlight. This takes place in the chloroplasts of these plant. Chloroplasts are structures that contains chlorophyll which traps in energy from the sunlight.

The mesophyll tissues are located between the upper and the lower epidermis of the leaf. The palisade mesophyll, which is found at the upper part, contains numerous chloroplasts and is the main site of photosynthesis in the leaf.

The spongy mesophyll is located at the lower part of the epidermis. They are irregularly arranged with air spaces between them which are linked to the stomatal openings. They also contain chloroplasts.

The stomatal guard cells are a pair of bean-shaped cells which controls the opening and closing of stomata. These cells contains chloroplasts which contributes to the movement of stomata.

Therefore the three different cells of the leaf that contains chloroplasts are the palisade mesophyll, the spongy mesophyll and the stomatal guard cells.

You can read more about chloroplasts through the link below:

brainly.com/question/20092825

6 0
3 years ago
A student uses gummy worms to model the process of mitosis. The model is shown below.
Neko [114]
C should be your answer for the question
6 0
3 years ago
A couple is expecting a child and is wondering if their offspring will be tall or short. Identify and explain the method that ca
yaroslaw [1]

There really is no way unless both the parents are the are tall or short

6 0
3 years ago
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Dr. Phillipi is writing an article to be published in the journal Psychological Science. At the beginning of her paper, she prov
Artemon [7]

The brief description of the project is called Abstract.

Option B.

<h3><u>Explanation:</u></h3>

An abstract is defined as a brief description of the project or content of an article, speech, or a book. An abstract is given at the beginning of the book or project to describe what's the topic of the project, what the project is going to prove, or to explain.

An introduction on the other hand is a description about the project topic, the prevailing idea, or explaining the topic of project.

A reference is described as the source from where the data of the project are collected or hints are taken.

A summary is the paragraph briefly describing the project conclusion at the end of the project, to briefly explain everything about the project.

7 0
3 years ago
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