2. Berdasarkan organisma-organisma berikut: Pokok padi
Belalang
Burung pipit
Burung hantu
Tikus
Beluncas
(a) bina satu siratan makanan.
(b) ramalkan kesan jika pokok padi mati akibat kemarau yang berpanjangan.​

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

b is the correct answer